diff --git a/skeletons/UniversalString.c b/skeletons/UniversalString.c
index 1e3444e..241fe67 100644
--- a/skeletons/UniversalString.c
+++ b/skeletons/UniversalString.c
@@ -30,7 +30,7 @@
 int
 UniversalString_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
 	asn_app_consume_bytes_f *cb, void *app_key) {
-	const UniversalString_t *st = sptr;
+	const UniversalString_t *st = (const UniversalString_t *)sptr;
 	uint32_t *wchar;
 	uint32_t *wend;
 	char scratch[128];			/* Scratchpad buffer */