diff --git a/src/datacache/mdlcache.h b/src/datacache/mdlcache.h
index 310df4b2..8570d4b2 100644
--- a/src/datacache/mdlcache.h
+++ b/src/datacache/mdlcache.h
@@ -192,7 +192,7 @@ struct studiodata_t
 	unsigned short refCount;
 	unsigned short flags;
 	MDLHandle_t modelHandle;
-	void* Unk3; // ptr to flags and model string.
+	void* unkStruct; // TODO: reverse structure
 	CStudioHWDataRef* hardwareRef;
 	void* materialTable; // contains a large table of CMaterialGlue objects.
 	int Unk5;