diff --git a/docs/progress.txt b/docs/progress.txt
index 2a62ccc3..f10e82d2 100644
--- a/docs/progress.txt
+++ b/docs/progress.txt
@@ -1113,8 +1113,8 @@ typedef struct __unaligned {
     int32_t bone_idx;
     int16_t *frame_base; // TODO: make me FRAME_INFO
 
-    void (*initialise)(int16_t item_number);
-    void (*control)(int16_t item_number);
+    void (*initialise)(int16_t item_num);
+    void (*control)(int16_t item_num);
     void (*floor)(
         const ITEM_INFO *item, int32_t x, int32_t y, int32_t z,
         int32_t *height);
diff --git a/src/game/objects/general/final_level_counter.h b/src/game/objects/general/final_level_counter.h
index 3ecb841e..f47b73df 100644
--- a/src/game/objects/general/final_level_counter.h
+++ b/src/game/objects/general/final_level_counter.h
@@ -2,4 +2,4 @@
 
 #include <stdint.h>
 
-void FinalLevelCounter_Control(int16_t item_number);
+void FinalLevelCounter_Control(int16_t item_num);
diff --git a/src/global/types.h b/src/global/types.h
index 2f9c7ade..9767b65b 100644
--- a/src/global/types.h
+++ b/src/global/types.h
@@ -1129,8 +1129,8 @@ typedef struct __unaligned {
     int32_t bone_idx;
     int16_t *frame_base; // TODO: make me FRAME_INFO
 
-    void (*initialise)(int16_t item_number);
-    void (*control)(int16_t item_number);
+    void (*initialise)(int16_t item_num);
+    void (*control)(int16_t item_num);
     void (*floor)(
         const ITEM_INFO *item, int32_t x, int32_t y, int32_t z,
         int32_t *height);