diff --git a/include/constants/global.h b/include/constants/global.h
index d83b878d9..21c781a0d 100644
--- a/include/constants/global.h
+++ b/include/constants/global.h
@@ -47,12 +47,13 @@
 #define UNION_ROOM_KB_ROW_COUNT 10
 #define GIFT_RIBBONS_COUNT 11
 
-#define POCKET_ITEMS        1
-#define POCKET_KEY_ITEMS    2
-#define POCKET_POKE_BALLS   3
-#define POCKET_TM_CASE      4
-#define POCKET_BERRY_POUCH  5
-#define NUM_BAG_POCKETS 5
+#define POCKET_ITEMS             1
+#define POCKET_KEY_ITEMS         2
+#define POCKET_POKE_BALLS        3
+#define POCKET_TM_CASE           4
+#define POCKET_BERRY_POUCH       5
+#define NUM_BAG_POCKETS          5
+#define NUM_BAG_POCKETS_NO_CASES 3 // number of pockets without considering TM case or berry pouch
 
 // Contests
 #define CONTEST_CATEGORIES_COUNT  5
diff --git a/include/item_menu.h b/include/item_menu.h
index 3ba3de4a9..1a8e4c567 100644
--- a/include/item_menu.h
+++ b/include/item_menu.h
@@ -15,8 +15,8 @@ struct BagStruct
     u8 location;
     bool8 bagOpen;
     u16 pocket;
-    u16 itemsAbove[3];
-    u16 cursorPos[3];
+    u16 itemsAbove[NUM_BAG_POCKETS_NO_CASES];
+    u16 cursorPos[NUM_BAG_POCKETS_NO_CASES];
 };
 
 extern struct BagStruct gBagMenuState;
diff --git a/src/item.c b/src/item.c
index b414ee8dd..656968370 100644
--- a/src/item.c
+++ b/src/item.c
@@ -331,7 +331,7 @@ void ClearBag(void)
 {
     u16 i;
 
-    for (i = 0; i < 5; i++)
+    for (i = 0; i < NUM_BAG_POCKETS; i++)
     {
         ClearItemSlots(gBagPockets[i].itemSlots, gBagPockets[i].capacity);
     }
diff --git a/src/item_menu.c b/src/item_menu.c
index b0c288383..8f52ead00 100644
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -47,8 +47,8 @@ struct BagMenuAlloc
     u16 contextMenuSelectedItem;
     u8 pocketScrollArrowsTask;
     u8 pocketSwitchArrowsTask;
-    u8 nItems[3];
-    u8 maxShowed[3];
+    u8 nItems[NUM_BAG_POCKETS_NO_CASES];
+    u8 maxShowed[NUM_BAG_POCKETS_NO_CASES];
     u8 data[4];
 };
 
@@ -57,8 +57,8 @@ struct BagSlots
     struct ItemSlot bagPocket_Items[BAG_ITEMS_COUNT];
     struct ItemSlot bagPocket_KeyItems[BAG_KEYITEMS_COUNT];
     struct ItemSlot bagPocket_PokeBalls[BAG_POKEBALLS_COUNT];
-    u16 itemsAbove[3];
-    u16 cursorPos[3];
+    u16 itemsAbove[NUM_BAG_POCKETS_NO_CASES];
+    u16 cursorPos[NUM_BAG_POCKETS_NO_CASES];
     u16 registeredItem;
     u16 pocket;
 };
@@ -832,7 +832,7 @@ void ResetBagCursorPositions(void)
     u8 i;
     gBagMenuState.pocket = POCKET_ITEMS - 1;
     gBagMenuState.bagOpen = FALSE;
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
     {
         gBagMenuState.itemsAbove[i] = 0;
         gBagMenuState.cursorPos[i] = 0;
@@ -857,7 +857,7 @@ void PocketCalculateInitialCursorPosAndItemsAbove(u8 pocketId)
 static void CalculateInitialCursorPosAndItemsAbove(void)
 {
     u8 i;
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
     {
         PocketCalculateInitialCursorPosAndItemsAbove(i);
     }
@@ -868,7 +868,7 @@ static void UpdatePocketScrollPositions(void)
     u8 i;
     u8 j;
 
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
     {
         if (gBagMenuState.itemsAbove[i] > 3)
         {
@@ -1011,7 +1011,7 @@ void Pocket_CalculateNItemsAndMaxShowed(u8 pocketId)
 static void All_CalculateNItemsAndMaxShowed(void)
 {
     u8 i;
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
         Pocket_CalculateNItemsAndMaxShowed(i);
 }
 
@@ -2067,7 +2067,7 @@ static void BackUpPlayerBag(void)
     memcpy(sBackupPlayerBag->bagPocket_PokeBalls, gSaveBlock1Ptr->bagPocket_PokeBalls, BAG_POKEBALLS_COUNT * sizeof(struct ItemSlot));
     sBackupPlayerBag->registeredItem = gSaveBlock1Ptr->registeredItem;
     sBackupPlayerBag->pocket = gBagMenuState.pocket;
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
     {
         sBackupPlayerBag->itemsAbove[i] = gBagMenuState.itemsAbove[i];
         sBackupPlayerBag->cursorPos[i] = gBagMenuState.cursorPos[i];
@@ -2087,7 +2087,7 @@ static void RestorePlayerBag(void)
     memcpy(gSaveBlock1Ptr->bagPocket_PokeBalls, sBackupPlayerBag->bagPocket_PokeBalls, BAG_POKEBALLS_COUNT * sizeof(struct ItemSlot));
     gSaveBlock1Ptr->registeredItem = sBackupPlayerBag->registeredItem;
     gBagMenuState.pocket = sBackupPlayerBag->pocket;
-    for (i = 0; i < 3; i++)
+    for (i = 0; i < NUM_BAG_POCKETS_NO_CASES; i++)
     {
         gBagMenuState.itemsAbove[i] = sBackupPlayerBag->itemsAbove[i];
         gBagMenuState.cursorPos[i] = sBackupPlayerBag->cursorPos[i];