diff --git a/skeletons/UTCTime.c b/skeletons/UTCTime.c
index 32c5817..55c7506 100644
--- a/skeletons/UTCTime.c
+++ b/skeletons/UTCTime.c
@@ -50,21 +50,20 @@
 	OCTET_STRING_decode_uper,
 	OCTET_STRING_encode_uper,
 #endif	/* ASN_DISABLE_PER_SUPPORT */
+	UTCTime_random_fill,
 	0	/* Use generic outmost tag fetcher */
 };
 asn_TYPE_descriptor_t asn_DEF_UTCTime = {
 	"UTCTime",
 	"UTCTime",
 	&asn_OP_UTCTime,
-	UTCTime_constraint,
 	asn_DEF_UTCTime_tags,
 	sizeof(asn_DEF_UTCTime_tags)
 	  / sizeof(asn_DEF_UTCTime_tags[0]) - 2,
 	asn_DEF_UTCTime_tags,
 	sizeof(asn_DEF_UTCTime_tags)
 	  / sizeof(asn_DEF_UTCTime_tags[0]),
-	0,	/* No OER visible constraints */
-	&asn_DEF_UTCTime_constraints,
+	{ 0, &asn_DEF_UTCTime_constraints, UTCTime_constraint },
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -194,3 +193,35 @@
 	return (UTCTime_t *)gt;
 }
 
+
+asn_random_fill_result_t
+UTCTime_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
+                    const asn_encoding_constraints_t *constraints,
+                    size_t max_length) {
+    asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
+    asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
+    asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
+    static const char *values[] = {
+        "700101000000",  "700101000000-0000", "700101000000+0000",
+        "700101000000Z", "821106210623",      "691106210827-0500",
+        "821106210629Z",
+    };
+    size_t rnd = asn_random_between(0, sizeof(values)/sizeof(values[0])-1);
+
+    (void)constraints;
+
+    if(max_length < sizeof("yymmddhhmmss")) {
+        return result_skipped;
+    }
+
+    if(*sptr) {
+        if(OCTET_STRING_fromBuf(*sptr, values[rnd], -1) != 0) {
+            if(!sptr) return result_failed;
+        }
+    } else {
+        *sptr = OCTET_STRING_new_fromBuf(td, values[rnd], -1);
+        if(!sptr) return result_failed;
+    }
+
+    return result_ok;
+}