diff --git a/libreborn/include/libreborn/minecraft.h b/libreborn/include/libreborn/minecraft.h
index 024d8c1..85e655f 100644
--- a/libreborn/include/libreborn/minecraft.h
+++ b/libreborn/include/libreborn/minecraft.h
@@ -158,7 +158,9 @@ static uint32_t Gui_selected_item_text_timer_property_offset = 0x9fc; // float
 
 // GameMode Constructors
 
+#define CREATOR_MODE_SIZE 0x18
 static void *CreatorMode = (void *) 0x1a044;
+#define SURVIVAL_MODE_SIZE 0x24
 static void *SurvivalMode = (void *) 0x1b7d8;
 
 // LevelData
diff --git a/mods/src/game_mode/game_mode.c b/mods/src/game_mode/game_mode.c
index f8f0460..bd4479b 100644
--- a/mods/src/game_mode/game_mode.c
+++ b/mods/src/game_mode/game_mode.c
@@ -17,7 +17,7 @@ static void set_is_survival(int new_is_survival) {
         patch((void *) 0x16efc, inventory_patch);
 
         // Use Correct Size For GameMode Object
-        unsigned char size_patch[4] = {new_is_survival ? 0x24 : 0x18, 0x00, 0xa0, 0xe3};
+        unsigned char size_patch[4] = {new_is_survival ? SURVIVAL_MODE_SIZE : CREATOR_MODE_SIZE, 0x00, 0xa0, 0xe3};
         patch((void *) 0x16ee4, size_patch);
 
         // Replace Default CreatorMode Constructor With CreatorMode Or SurvivalMode Constructor