diff --git a/include/battle_script_commands.h b/include/battle_script_commands.h
index cb81ad812..ed90d787f 100644
--- a/include/battle_script_commands.h
+++ b/include/battle_script_commands.h
@@ -1,7 +1,6 @@
 #ifndef GUARD_BATTLE_SCRIPT_COMMANDS_H
 #define GUARD_BATTLE_SCRIPT_COMMANDS_H
 
-#include "constants/pokemon.h"
 #include "constants/battle_script_commands.h"
 
 // Arguments for 'flags' in HandleBattleWindow
diff --git a/include/constants/global.h b/include/constants/global.h
index ef7861e9e..48b03b5cc 100644
--- a/include/constants/global.h
+++ b/include/constants/global.h
@@ -29,11 +29,20 @@
 #define GAME_VERSION (VERSION_EMERALD)
 #define GAME_LANGUAGE (LANGUAGE_ENGLISH)
 
+// party sizes
+#define PARTY_SIZE 6
+#define MULTI_PARTY_SIZE (PARTY_SIZE / 2)
+#define FRONTIER_PARTY_SIZE         3
+#define FRONTIER_DOUBLES_PARTY_SIZE 4
+#define FRONTIER_MULTI_PARTY_SIZE   2
+#define MAX_FRONTIER_PARTY_SIZE     FRONTIER_DOUBLES_PARTY_SIZE
+#define UNION_ROOM_PARTY_SIZE       2
+
 // capacities of various saveblock objects
 #define DAYCARE_MON_COUNT 2
 #define POKEBLOCKS_COUNT 40
 #define OBJECT_EVENTS_COUNT 16
-#define MAIL_COUNT 16
+#define MAIL_COUNT (10 + PARTY_SIZE)
 #define SECRET_BASES_COUNT 20
 #define TV_SHOWS_COUNT 25
 #define POKE_NEWS_COUNT 16
@@ -70,7 +79,6 @@
 
 #define TRAINER_ID_LENGTH 4
 #define MAX_MON_MOVES 4
-#define NUM_STATS 6
 
 #define CONTESTANT_COUNT 4
 #define CONTEST_CATEGORY_COOL     0
@@ -80,15 +88,6 @@
 #define CONTEST_CATEGORY_TOUGH    4
 #define CONTEST_CATEGORIES_COUNT  5
 
-// party sizes
-#define PARTY_SIZE 6
-#define MULTI_PARTY_SIZE (PARTY_SIZE / 2)
-#define FRONTIER_PARTY_SIZE         3
-#define FRONTIER_DOUBLES_PARTY_SIZE 4
-#define FRONTIER_MULTI_PARTY_SIZE   2
-#define MAX_FRONTIER_PARTY_SIZE     FRONTIER_DOUBLES_PARTY_SIZE
-#define UNION_ROOM_PARTY_SIZE       2
-
 // string lengths
 #define ITEM_NAME_LENGTH 14
 #define POKEMON_NAME_LENGTH 10
diff --git a/include/constants/pokemon.h b/include/constants/pokemon.h
index 9fa023cd5..0a74e751e 100644
--- a/include/constants/pokemon.h
+++ b/include/constants/pokemon.h
@@ -78,11 +78,13 @@
 #define STAT_SPEED   3
 #define STAT_SPATK   4
 #define STAT_SPDEF   5
+#define NUM_STATS    6
+
 #define STAT_ACC     6 // Only in battles.
 #define STAT_EVASION 7 // Only in battles.
 
-#define NUM_NATURE_STATS NUM_STATS - 1 // excludes HP
-#define NUM_BATTLE_STATS NUM_STATS + 2 // includes Accuracy and Evasion
+#define NUM_NATURE_STATS (NUM_STATS - 1) // excludes HP
+#define NUM_BATTLE_STATS (NUM_STATS + 2) // includes Accuracy and Evasion
 
 #define MIN_STAT_STAGE     0
 #define DEFAULT_STAT_STAGE 6
diff --git a/include/easy_chat.h b/include/easy_chat.h
index 4d2bc7c98..c9ef4428f 100644
--- a/include/easy_chat.h
+++ b/include/easy_chat.h
@@ -2,7 +2,6 @@
 #define GUARD_EASYCHAT_H
 
 #include "main.h"
-#include "constants/easy_chat.h"
 
 struct EasyChatScreenTemplate
 {
diff --git a/include/global.h b/include/global.h
index 024280f98..ca5f50916 100644
--- a/include/global.h
+++ b/include/global.h
@@ -11,6 +11,8 @@
 #include "constants/species.h"
 #include "constants/berry.h"
 #include "constants/maps.h"
+#include "constants/pokemon.h"
+#include "constants/easy_chat.h"
 
 // Prevent cross-jump optimization.
 #define BLOCK_CROSS_JUMP asm("");
@@ -127,6 +129,7 @@
 
 #define DEX_FLAGS_NO ROUND_BITS_TO_BYTES(NUM_SPECIES)
 #define NUM_FLAG_BYTES ROUND_BITS_TO_BYTES(FLAGS_COUNT)
+#define NUM_ADDITIONAL_PHRASE_BYTES ROUND_BITS_TO_BYTES(NUM_ADDITIONAL_PHRASES)
 
 struct Coords8
 {
@@ -984,7 +987,7 @@ struct SaveBlock1
     /*0x2BC8*/ u16 easyChatBattleWon[EASY_CHAT_BATTLE_WORDS_COUNT];
     /*0x2BD4*/ u16 easyChatBattleLost[EASY_CHAT_BATTLE_WORDS_COUNT];
     /*0x2BE0*/ struct Mail mail[MAIL_COUNT];
-    /*0x2E20*/ u8 additionalPhrases[8]; // bitfield for 33 additional phrases in easy chat system
+    /*0x2E20*/ u8 additionalPhrases[NUM_ADDITIONAL_PHRASE_BYTES]; // bitfield for 33 additional phrases in easy chat system
     /*0x2E28*/ OldMan oldMan;
     /*0x2e64*/ struct DewfordTrend dewfordTrends[SAVED_TRENDS_COUNT];
     /*0x2e90*/ struct ContestWinner contestWinners[NUM_CONTEST_WINNERS]; // see CONTEST_WINNER_*
diff --git a/include/menu.h b/include/menu.h
index 69000d408..bf3f56aea 100644
--- a/include/menu.h
+++ b/include/menu.h
@@ -4,7 +4,6 @@
 #include "task.h"
 #include "text.h"
 #include "window.h"
-#include "constants/pokemon.h"
 
 #define MENU_NOTHING_CHOSEN -2
 #define MENU_B_PRESSED -1
diff --git a/include/pokeblock.h b/include/pokeblock.h
index 9e0161495..24e6ea856 100644
--- a/include/pokeblock.h
+++ b/include/pokeblock.h
@@ -1,9 +1,6 @@
 #ifndef GUARD_POKEBLOCK_H
 #define GUARD_POKEBLOCK_H
 
-#include "constants/berry.h"
-#include "constants/pokemon.h"
-
 #define TAG_POKEBLOCK       14818
 
 enum
diff --git a/include/pokemon.h b/include/pokemon.h
index 315416c38..28460bbe6 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -1,7 +1,6 @@
 #ifndef GUARD_POKEMON_H
 #define GUARD_POKEMON_H
 
-#include "constants/pokemon.h"
 #include "sprite.h"
 
 struct PokemonSubstruct0
diff --git a/include/save.h b/include/save.h
index be7961136..89fc9ad33 100644
--- a/include/save.h
+++ b/include/save.h
@@ -52,8 +52,7 @@ enum
 {
     SAVE_NORMAL,
     SAVE_LINK, // Link / Battle Frontier
-    //EREADER_SAVE, // deprecated in Emerald
-    SAVE_LINK2, // unknown 2nd link save
+    SAVE_EREADER, // deprecated in Emerald
     SAVE_HALL_OF_FAME,
     SAVE_OVERWRITE_DIFFERENT_FILE,
     SAVE_HALL_OF_FAME_ERASE_BEFORE // unused
diff --git a/src/apprentice.c b/src/apprentice.c
index 2ab2f0e5a..591ab79e4 100644
--- a/src/apprentice.c
+++ b/src/apprentice.c
@@ -23,9 +23,7 @@
 #include "task.h"
 #include "text.h"
 #include "constants/battle_frontier.h"
-#include "constants/easy_chat.h"
 #include "constants/items.h"
-#include "constants/pokemon.h"
 #include "constants/songs.h"
 #include "constants/trainers.h"
 #include "constants/moves.h"
diff --git a/src/bard_music.c b/src/bard_music.c
index 114f1cf42..bdc5ac808 100644
--- a/src/bard_music.c
+++ b/src/bard_music.c
@@ -1,6 +1,5 @@
 #include "global.h"
 #include "bard_music.h"
-#include "constants/easy_chat.h"
 #include "easy_chat.h"
 
 #include "data/bard_music/bard_sounds.h"
diff --git a/src/battle_anim_smokescreen.c b/src/battle_anim_smokescreen.c
index 9844f5007..0819796d2 100644
--- a/src/battle_anim_smokescreen.c
+++ b/src/battle_anim_smokescreen.c
@@ -5,7 +5,6 @@
 #include "graphics.h"
 #include "sprite.h"
 #include "util.h"
-#include "constants/pokemon.h"
 #include "constants/battle_palace.h"
 
 static void SmokescreenImpact_Callback(struct Sprite *);
diff --git a/src/battle_dome.c b/src/battle_dome.c
index 293662985..2f77491c9 100644
--- a/src/battle_dome.c
+++ b/src/battle_dome.c
@@ -34,7 +34,6 @@
 #include "constants/battle_dome.h"
 #include "constants/frontier_util.h"
 #include "constants/moves.h"
-#include "constants/pokemon.h"
 #include "constants/trainers.h"
 #include "constants/abilities.h"
 #include "constants/songs.h"
diff --git a/src/battle_pike.c b/src/battle_pike.c
index d889d7cdd..2b0cf6420 100644
--- a/src/battle_pike.c
+++ b/src/battle_pike.c
@@ -17,7 +17,6 @@
 #include "constants/battle_frontier.h"
 #include "constants/frontier_util.h"
 #include "constants/abilities.h"
-#include "constants/easy_chat.h"
 #include "constants/layouts.h"
 #include "constants/rgb.h"
 #include "constants/trainers.h"
diff --git a/src/battle_tower.c b/src/battle_tower.c
index 7ed15d1e6..d1c95285b 100644
--- a/src/battle_tower.c
+++ b/src/battle_tower.c
@@ -35,7 +35,6 @@
 #include "constants/trainers.h"
 #include "constants/event_objects.h"
 #include "constants/moves.h"
-#include "constants/easy_chat.h"
 
 extern const u8 MossdeepCity_SpaceCenter_2F_EventScript_MaxieTrainer[];
 extern const u8 MossdeepCity_SpaceCenter_2F_EventScript_TabithaTrainer[];
diff --git a/src/data/easy_chat/easy_chat_words_by_letter.h b/src/data/easy_chat/easy_chat_words_by_letter.h
index a56e3184f..235afbb78 100755
--- a/src/data/easy_chat/easy_chat_words_by_letter.h
+++ b/src/data/easy_chat/easy_chat_words_by_letter.h
@@ -1,5 +1,4 @@
 #include "easy_chat.h"
-#include "constants/easy_chat.h"
 
 #define DOUBLE_SPECIES_NAME EC_EMPTY_WORD, 2,
 
diff --git a/src/data/lilycove_lady.h b/src/data/lilycove_lady.h
index dd0885ff8..4a3a7a719 100644
--- a/src/data/lilycove_lady.h
+++ b/src/data/lilycove_lady.h
@@ -1,4 +1,3 @@
-#include "constants/easy_chat.h"
 #include "constants/event_objects.h"
 #include "constants/items.h"
 #include "constants/moves.h"
diff --git a/src/dewford_trend.c b/src/dewford_trend.c
index bba2085e8..08dd9afe0 100644
--- a/src/dewford_trend.c
+++ b/src/dewford_trend.c
@@ -8,7 +8,6 @@
 #include "text.h"
 #include "tv.h"
 #include "string_util.h"
-#include "constants/easy_chat.h"
 
 /*
     ## Overview ##
diff --git a/src/easy_chat.c b/src/easy_chat.c
index f9ba44ba7..734fd4f18 100644
--- a/src/easy_chat.c
+++ b/src/easy_chat.c
@@ -27,7 +27,6 @@
 #include "task.h"
 #include "text_window.h"
 #include "window.h"
-#include "constants/easy_chat.h"
 #include "constants/event_objects.h"
 #include "constants/lilycove_lady.h"
 #include "constants/mauville_old_man.h"
diff --git a/src/ereader_helpers.c b/src/ereader_helpers.c
index 0de87602e..c3f17f234 100755
--- a/src/ereader_helpers.c
+++ b/src/ereader_helpers.c
@@ -10,7 +10,6 @@
 #include "task.h"
 #include "util.h"
 #include "trainer_hill.h"
-#include "constants/easy_chat.h"
 #include "constants/trainers.h"
 #include "constants/moves.h"
 #include "constants/items.h"
diff --git a/src/mail_data.c b/src/mail_data.c
index ca50a687e..99cf1f9ed 100644
--- a/src/mail_data.c
+++ b/src/mail_data.c
@@ -5,7 +5,6 @@
 #include "pokemon_icon.h"
 #include "text.h"
 #include "international_string_util.h"
-#include "constants/easy_chat.h"
 
 #define UNOWN_OFFSET 30000
 
diff --git a/src/mauville_old_man.c b/src/mauville_old_man.c
index 06c3b8288..681a3dadf 100644
--- a/src/mauville_old_man.c
+++ b/src/mauville_old_man.c
@@ -1,7 +1,6 @@
 #include "global.h"
 #include "main.h"
 #include "constants/songs.h"
-#include "constants/easy_chat.h"
 #include "constants/event_objects.h"
 #include "mauville_old_man.h"
 #include "event_data.h"
diff --git a/src/party_menu.c b/src/party_menu.c
index 34aff619f..36e83a168 100755
--- a/src/party_menu.c
+++ b/src/party_menu.c
@@ -65,7 +65,6 @@
 #include "window.h"
 #include "constants/battle.h"
 #include "constants/battle_frontier.h"
-#include "constants/easy_chat.h"
 #include "constants/field_effects.h"
 #include "constants/item_effects.h"
 #include "constants/items.h"
diff --git a/src/save.c b/src/save.c
index b53956438..dafc20868 100644
--- a/src/save.c
+++ b/src/save.c
@@ -428,7 +428,7 @@ static u8 CopySectorSecurityByte(u16 sectorId, const struct SaveSectorLocation *
     }
     else
     {
-        // Succeded
+        // Succeeded
         SetDamagedSectorBits(DISABLE, sector);
         return SAVE_STATUS_OK;
     }
@@ -734,7 +734,7 @@ u8 HandleSavingData(u8 saveType)
         WriteSaveSectorOrSlot(FULL_SAVE_SLOT, gRamSaveSectorLocations);
         break;
     case SAVE_LINK:
-    case SAVE_LINK2:
+    case SAVE_EREADER: // Dummied, now duplicate of SAVE_LINK
         // Used by link / Battle Frontier
         // Write only SaveBlocks 1 and 2 (skips the PC)
         CopyPartyAndObjectsToSave();
diff --git a/src/trade.c b/src/trade.c
index 935a89b02..b48d1abf5 100644
--- a/src/trade.c
+++ b/src/trade.c
@@ -44,7 +44,6 @@
 #include "util.h"
 #include "window.h"
 #include "constants/contest.h"
-#include "constants/easy_chat.h"
 #include "constants/items.h"
 #include "constants/moves.h"
 #include "constants/region_map_sections.h"
diff --git a/src/trainer_hill.c b/src/trainer_hill.c
index 04312a2dd..3ada262e5 100644
--- a/src/trainer_hill.c
+++ b/src/trainer_hill.c
@@ -29,7 +29,6 @@
 #include "constants/layouts.h"
 #include "constants/moves.h"
 #include "constants/trainers.h"
-#include "constants/easy_chat.h"
 #include "constants/trainer_hill.h"
 #include "constants/trainer_types.h"