diff --git a/openbsc/src/gsm_04_11.c b/openbsc/src/gsm_04_11.c
index 1a17dd9..d4df989 100644
--- a/openbsc/src/gsm_04_11.c
+++ b/openbsc/src/gsm_04_11.c
@@ -305,7 +305,7 @@
 	unsigned long minutes;
 
 	expires = gsm340_scts(sms_vp);
-	now = mktime(gmtime(NULL));
+	now = time(NULL);
 	if (expires <= now)
 		minutes = 0;
 	else