diff --git a/compiler/sigmatch.nim b/compiler/sigmatch.nim
index 96dd44d766..5b0a5a339a 100644
--- a/compiler/sigmatch.nim
+++ b/compiler/sigmatch.nim
@@ -2455,7 +2455,7 @@ proc arrayConstr(c: PContext, n: PNode): PType =
   result = newTypeS(tyArray, c)
   rawAddSon(result, makeRangeType(c, 0, 0, n.info))
   addSonSkipIntLit(result, skipTypes(n.typ,
-      {tyGenericInst, tyVar, tyLent, tyOrdinal}), c.idgen)
+      {tyVar, tyLent, tyOrdinal}), c.idgen)
 
 proc arrayConstr(c: PContext, info: TLineInfo): PType =
   result = newTypeS(tyArray, c)