diff --git a/tests/94-set-optionals-OK.asn1.-P b/tests/94-set-optionals-OK.asn1.-P
index cd099c0..3d13658 100644
--- a/tests/94-set-optionals-OK.asn1.-P
+++ b/tests/94-set-optionals-OK.asn1.-P
@@ -175,7 +175,7 @@
 	asn_MAP_TestSet_tag2el_1,	/* Same as above */
 	10,	/* Count of tags in the CXER map */
 	1,	/* Whether extensible */
-	(unsigned int *)asn_MAP_TestSet_mmap_1	/* Mandatory elements map */
+	(const unsigned int *)asn_MAP_TestSet_mmap_1	/* Mandatory elements map */
 };
 asn_TYPE_descriptor_t asn_DEF_TestSet = {
 	"TestSet",