1 files changed, 1 insertions, 0 deletions
diff --git a/vm.c b/vm.c
index 1eefee18a6..9ece1b8c3d 100644
--- a/vm.c
+++ b/vm.c
@@ -1569,6 +1569,7 @@ vm_init_redefined_flag(void)
     OP(Succ, SUCC), (C(Integer), C(String), C(Time));
     OP(EqTilde, MATCH), (C(Regexp), C(String));
     OP(Freeze, FREEZE), (C(String));
+    OP(UMinus, UMINUS), (C(String));
     OP(Max, MAX), (C(Array));
     OP(Min, MIN), (C(Array));
 #undef C