diff --git a/src/script.c b/src/script.c
index c252c95f0446..659480981393 100644
--- a/src/script.c
+++ b/src/script.c
@@ -29,7 +29,7 @@ static bool8 sLockFieldControls;
 
 extern ScrCmdFunc gScriptCmdTable[];
 extern ScrCmdFunc gScriptCmdTableEnd[];
-extern void *gNullScriptPtr;
+extern void * const gNullScriptPtr;
 
 void InitScriptContext(struct ScriptContext *ctx, void *cmdTable, void *cmdTableEnd)
 {