diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim
index 3178bee60c..c3013852d1 100644
--- a/compiler/vmgen.nim
+++ b/compiler/vmgen.nim
@@ -368,7 +368,7 @@ proc sameConstant*(a, b: PNode): bool =
     case a.kind
     of nkSym: result = a.sym == b.sym
     of nkIdent: result = a.ident.id == b.ident.id
-    of nkCharLit..nkInt64Lit: result = a.intVal == b.intVal
+    of nkCharLit..nkUInt64Lit: result = a.intVal == b.intVal
     of nkFloatLit..nkFloat64Lit: result = a.floatVal == b.floatVal
     of nkStrLit..nkTripleStrLit: result = a.strVal == b.strVal
     of nkType, nkNilLit: result = a.typ == b.typ