diff --git a/include/item_icon.h b/include/item_icon.h
index af03473fb..c93a519bb 100644
--- a/include/item_icon.h
+++ b/include/item_icon.h
@@ -1,8 +1,8 @@
 #ifndef GUARD_ITEM_ICON_H
 #define GUARD_ITEM_ICON_H
 
-extern void *gItemIconDecompressionBuffer;
-extern void *gItemIcon4x4Buffer;
+extern u8 *gItemIconDecompressionBuffer;
+extern u8 *gItemIcon4x4Buffer;
 
 extern const struct SpriteTemplate gItemIconSpriteTemplate;
 
diff --git a/src/item_icon.c b/src/item_icon.c
index 487b89b71..0f02be146 100644
--- a/src/item_icon.c
+++ b/src/item_icon.c
@@ -7,8 +7,8 @@
 #include "constants/items.h"
 
 // EWRAM vars
-EWRAM_DATA void *gItemIconDecompressionBuffer = NULL;
-EWRAM_DATA void *gItemIcon4x4Buffer = NULL;
+EWRAM_DATA u8 *gItemIconDecompressionBuffer = NULL;
+EWRAM_DATA u8 *gItemIcon4x4Buffer = NULL;
 
 // const rom data
 #include "data/item_icon_table.h"