diff --git a/tests/19-param-OK.asn1.-P b/tests/19-param-OK.asn1.-P
index 17066a2..b98d1ed 100644
--- a/tests/19-param-OK.asn1.-P
+++ b/tests/19-param-OK.asn1.-P
@@ -266,7 +266,7 @@
 	}
 	
 	
-	if(check_permitted_alphabet_1(sptr)) {
+	if(!check_permitted_alphabet_1(sptr)) {
 		/* Constraint check succeeded */
 		return 0;
 	} else {