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-rw-r--r--compiler/vm.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/vm.nim b/compiler/vm.nim
index 4eef91dfc..5b5b807bb 100644
--- a/compiler/vm.nim
+++ b/compiler/vm.nim
@@ -1228,7 +1228,7 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
     of opcOf:
       decodeBC(rkInt)
       let typ = c.types[regs[rc].intVal.int]
-      regs[ra].intVal = ord(inheritanceDiff(regs[rb].node.typ, typ) >= 0)
+      regs[ra].intVal = ord(inheritanceDiff(regs[rb].node.typ, typ) <= 0)
     of opcIs:
       decodeBC(rkInt)
       let t1 = regs[rb].node.typ.skipTypes({tyTypeDesc})