diff --git a/lib/system/gc_ms.nim b/lib/system/gc_ms.nim
index aab28eba23..ee80c61e9c 100644
--- a/lib/system/gc_ms.nim
+++ b/lib/system/gc_ms.nim
@@ -58,7 +58,7 @@ type
     stat: GcStat
     additionalRoots: CellSeq # dummy roots for GC_ref/unref
 {.deprecated: [TWalkOp: WalkOp, TFinalizer: Finalizer, TGcStat: GcStat,
-              TGlobalMarkerProc: GlobalMarkerProc, TGcHeap, GcHeap].}
+              TGlobalMarkerProc: GlobalMarkerProc, TGcHeap: GcHeap].}
 var
   gch {.rtlThreadVar.}: GcHeap