diff --git a/src/battle_main.c b/src/battle_main.c
index 8cebf910c..70eebed85 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -3590,7 +3590,6 @@ static void BattleIntroOpponent1SendsOutMonAnimation(void)
 
     gBattleMainFunc = BattleIntroRecordMonsToDex;
 }
-
 #else
 ASM_DIRECT
 static void BattleIntroOpponent1SendsOutMonAnimation(void)
@@ -3677,7 +3676,6 @@ _0803B2F2:\n\
 	.pool\n\
         .syntax divided");
 }
-
 #endif // NONMATCHING
 
 static void BattleIntroRecordMonsToDex(void)
diff --git a/src/berry_blender.c b/src/berry_blender.c
index 1ac52dd6c..9e6a0fef7 100644
--- a/src/berry_blender.c
+++ b/src/berry_blender.c
@@ -29,6 +29,7 @@
 #include "pokeblock.h"
 #include "trig.h"
 #include "tv.h"
+#include "item_menu.h"
 
 #define BLENDER_SCORE_BEST      0
 #define BLENDER_SCORE_GOOD      1
@@ -128,7 +129,6 @@ struct BerryBlenderData
 
 extern struct MusicPlayerInfo gMPlayInfo_SE2;
 extern struct MusicPlayerInfo gMPlayInfo_BGM;
-extern u16 gSpecialVar_ItemId;
 extern u8 gInGameOpponentsNo;
 extern u8 gUnknown_020322D5;
 extern u8 gResultsWindowId;
@@ -155,13 +155,11 @@ extern void sub_81978B0(u16);
 extern void sub_800A418(void);
 extern u8 sub_800A9D8(void);
 extern bool8 sub_800A4D8(u8);
-extern void sub_8197DF8(u8 windowId, bool8 copyToVram);
 extern void sub_809882C(u8, u16, u8);
 extern void copy_textbox_border_tile_patterns_to_vram(u8, u16, u8);
 extern void sub_81AABF0(void (*callback)(void));
 extern void sub_800B4C0(void);
 extern void ClearLinkCallback(void);
-extern void CB2_ReturnToFieldContinueScript(void);
 extern void sub_8153430(void);
 extern bool8 sub_8153474(void);
 extern void sub_80EECEC(void);
diff --git a/src/birch_pc.c b/src/birch_pc.c
index 0f44824f7..3148832be 100644
--- a/src/birch_pc.c
+++ b/src/birch_pc.c
@@ -5,10 +5,6 @@
 #include "constants/species.h"
 #include "strings.h"
 
-extern u16 gSpecialVar_0x8004;
-extern u16 gSpecialVar_0x8005;
-extern u16 gSpecialVar_0x8006;
-
 bool16 ScriptGetPokedexInfo(void)
 {
     if (gSpecialVar_0x8004 == 0) // is national dex not present?