diff --git a/reactos/lib/comctl32/imagelist.c b/reactos/lib/comctl32/imagelist.c
index 78d33ab03de..0ea644f052b 100644
--- a/reactos/lib/comctl32/imagelist.c
+++ b/reactos/lib/comctl32/imagelist.c
@@ -553,6 +553,9 @@ ImageList_Create (INT cx, INT cy, UINT flags,
 
     TRACE("(%d %d 0x%x %d %d)\n", cx, cy, flags, cInitial, cGrow);
 
+    if (flags & ILC_COLOR32)
+	FIXME("ILC_COLOR32 (24 bit color image list with 8 bit alpha channel) is not yet supported");
+
     himl = (HIMAGELIST)Alloc (sizeof(struct _IMAGELIST));
     if (!himl)
         return NULL;