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-rw-r--r--compiler/sigmatch.nim2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/sigmatch.nim b/compiler/sigmatch.nim
index 19ef8a117..7cde101cb 100644
--- a/compiler/sigmatch.nim
+++ b/compiler/sigmatch.nim
@@ -900,6 +900,8 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
       if sameDistinctTypes(f, a): result = isEqual
       elif f.base.kind == tyAnything: result = isGeneric
       elif c.coerceDistincts: result = typeRel(c, f.base, a)
+    elif a.kind == tyNil and f.base.kind in NilableTypes:
+      result = f.allowsNil
     elif c.coerceDistincts: result = typeRel(c, f.base, a)
   of tySet:
     if a.kind == tySet: