diff --git a/insns.def b/insns.def
index 04ecd8d8c8..e55ec30a07 100644
--- a/insns.def
+++ b/insns.def
@@ -840,8 +840,6 @@ checkmatch
     if (flag & VM_CHECKMATCH_ARRAY) {
 	int i;
 	for (i = 0; i < RARRAY_LEN(pattern); i++) {
-	    enum vm_check_match_type checkmatch_type =
-		(enum vm_check_match_type)(flag & VM_CHECKMATCH_TYPE_MASK);
 	    if (RTEST(check_match(RARRAY_PTR(pattern)[i], target, checkmatch_type))) {
 		result = Qtrue;
 		break;