diff --git a/amxmodx/sdk/amxxmodule.h b/amxmodx/sdk/amxxmodule.h
index 93148ba2..1863c829 100755
--- a/amxmodx/sdk/amxxmodule.h
+++ b/amxmodx/sdk/amxxmodule.h
@@ -929,7 +929,7 @@ void FN_EngineFprintf(FILE *pfile, char *szFmt, ...);
 #endif // FN_EngineFprintf
 
 #ifdef FN_PvAllocEntPrivateData
-void *FN_PvAllocEntPrivateData(edict_t *pEdict, long cb);
+void *FN_PvAllocEntPrivateData(edict_t *pEdict, int32 cb);
 #endif // FN_PvAllocEntPrivateData
 
 #ifdef FN_PvEntPrivateData