diff --git a/core/sys/windows/comctl32.odin b/core/sys/windows/comctl32.odin
index 87c42c3ce..68245fabc 100644
--- a/core/sys/windows/comctl32.odin
+++ b/core/sys/windows/comctl32.odin
@@ -1612,7 +1612,7 @@ TVINSERTSTRUCTW :: struct {
 	_: struct #raw_union {
 		itemex: TVITEMEXW,
 		item: TV_ITEMW,
-	}
+	},
 }
 TV_INSERTSTRUCTW   :: TVINSERTSTRUCTW
 LPTVINSERTSTRUCTW  :: ^TVINSERTSTRUCTW