diff --git a/include/constants/region_map_sections.h b/include/constants/region_map_sections.h
index 12c894367..bba76939c 100644
--- a/include/constants/region_map_sections.h
+++ b/include/constants/region_map_sections.h
@@ -216,10 +216,10 @@
 #define MAPSEC_TRAINER_HILL                 0xD4
 #define MAPSEC_NONE                         0xD5
 
-#define MAPSEC_SPECIAL_EGG                  0xFD
-#define MAPSEC_IN_GAME_TRADE                0xFE
-#define MAPSEC_FATEFUL_ENCOUNTER            0xFF
+#define METLOC_SPECIAL_EGG                  0xFD
+#define METLOC_IN_GAME_TRADE                0xFE
+#define METLOC_FATEFUL_ENCOUNTER            0xFF
 
-#define MAPSEC_SUBTRACT_KANTO (MAPSEC_SPECIAL_AREA - MAPSEC_DYNAMIC)
+#define KANTO_MAPSEC_COUNT (MAPSEC_SPECIAL_AREA - MAPSEC_DYNAMIC)
 
 #endif //GUARD_REGIONMAPSEC_H
diff --git a/src/map_name_popup.c b/src/map_name_popup.c
index ab52cb37e..c13747006 100644
--- a/src/map_name_popup.c
+++ b/src/map_name_popup.c
@@ -157,22 +157,22 @@ static const u8 gRegionMapSectionId_To_PopUpThemeIdMapping[] =
     [MAPSEC_SKY_PILLAR] = MAPPOPUP_THEME_STONE,
     [MAPSEC_SECRET_BASE] = MAPPOPUP_THEME_STONE,
     [MAPSEC_DYNAMIC] = MAPPOPUP_THEME_MARBLE,
-    [MAPSEC_AQUA_HIDEOUT - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_MAGMA_HIDEOUT - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_MIRAGE_TOWER - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_BIRTH_ISLAND_2 - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_WOOD,
-    [MAPSEC_FARAWAY_ISLAND - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_WOOD,
-    [MAPSEC_ARTISAN_CAVE - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_MARINE_CAVE - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_UNDERWATER_MARINE_CAVE - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE2,
-    [MAPSEC_TERRA_CAVE - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_UNDERWATER_TERRA_CAVE - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE2,
-    [MAPSEC_UNDERWATER_UNK1 - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE2,
-    [MAPSEC_UNDERWATER_129 - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE2,
-    [MAPSEC_DESERT_UNDERPASS - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_ALTERING_CAVE_2 - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_NAVEL_ROCK2 - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_STONE,
-    [MAPSEC_TRAINER_HILL - MAPSEC_SUBTRACT_KANTO] = MAPPOPUP_THEME_MARBLE
+    [MAPSEC_AQUA_HIDEOUT - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_MAGMA_HIDEOUT - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_MIRAGE_TOWER - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_BIRTH_ISLAND_2 - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_WOOD,
+    [MAPSEC_FARAWAY_ISLAND - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_WOOD,
+    [MAPSEC_ARTISAN_CAVE - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_MARINE_CAVE - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_UNDERWATER_MARINE_CAVE - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE2,
+    [MAPSEC_TERRA_CAVE - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_UNDERWATER_TERRA_CAVE - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE2,
+    [MAPSEC_UNDERWATER_UNK1 - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE2,
+    [MAPSEC_UNDERWATER_129 - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE2,
+    [MAPSEC_DESERT_UNDERPASS - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_ALTERING_CAVE_2 - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_NAVEL_ROCK2 - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_STONE,
+    [MAPSEC_TRAINER_HILL - KANTO_MAPSEC_COUNT] = MAPPOPUP_THEME_MARBLE
 };
 
 static const u8 gText_PyramidFloor1[] = _("PYRAMID FLOOR 1");
diff --git a/src/pokemon_summary_screen.c b/src/pokemon_summary_screen.c
index 14d5aa9dc..14bfba4ad 100644
--- a/src/pokemon_summary_screen.c
+++ b/src/pokemon_summary_screen.c
@@ -3048,11 +3048,11 @@ static void BufferMonTrainerMemo(void)
             else
                 text = (sum->metLocation >= MAPSEC_NONE) ? gText_XNatureMetSomewhereAt : gText_XNatureMetAtYZ;
         }
-        else if (sum->metLocation == MAPSEC_FATEFUL_ENCOUNTER)
+        else if (sum->metLocation == METLOC_FATEFUL_ENCOUNTER)
         {
             text = gText_XNatureFatefulEncounter;
         }
-        else if (sum->metLocation != MAPSEC_IN_GAME_TRADE && DidMonComeFromGBAGames())
+        else if (sum->metLocation != METLOC_IN_GAME_TRADE && DidMonComeFromGBAGames())
         {
             text = (sum->metLocation >= MAPSEC_NONE) ? gText_XNatureObtainedInTrade : gText_XNatureProbablyMetAt;
         }
@@ -3183,11 +3183,11 @@ static void PrintEggMemo(void)
 
     if (pssData->summary.sanity != 1)
     {
-        if (sum->metLocation == MAPSEC_FATEFUL_ENCOUNTER)
+        if (sum->metLocation == METLOC_FATEFUL_ENCOUNTER)
             text = gText_PeculiarEggNicePlace;
         else if (DidMonComeFromGBAGames() == FALSE || DoesMonOTMatchOwner() == FALSE)
             text = gText_PeculiarEggTrade;
-        else if (sum->metLocation == MAPSEC_SPECIAL_EGG)
+        else if (sum->metLocation == METLOC_SPECIAL_EGG)
             text = (DidMonComeFromRSE() == TRUE) ? gText_EggFromHotSprings : gText_EggFromTraveler;
         else
             text = gText_OddEggFoundByCouple;