diff --git a/tests/125-bitstring-constraint-OK.asn1.-P b/tests/125-bitstring-constraint-OK.asn1.-P
index 6b5c762..c464138 100644
--- a/tests/125-bitstring-constraint-OK.asn1.-P
+++ b/tests/125-bitstring-constraint-OK.asn1.-P
@@ -42,6 +42,7 @@
 	
 	
 	if(1 /* No applicable constraints whatsoever */) {
+		(void)st; /* Unused variable */
 		/* Nothing is here. See below */
 	}