diff --git a/src/modems/hayes.c b/src/modems/hayes.c
index 859ccb4..6dfb45d 100644
--- a/src/modems/hayes.c
+++ b/src/modems/hayes.c
@@ -1757,13 +1757,16 @@ static char * _request_attention_message_send(Hayes * hayes,
 		return NULL;
 	pdulen = strlen(pdu);
 	len = sizeof(cmd) + 10 + pdulen + 1;
-	ret = malloc(len);
+	if((ret = malloc(len)) == NULL)
+	{
+		free(pdu);
+		return NULL;
+	}
 	if(channel->quirks & HAYES_QUIRK_WANT_SMSC_IN_PDU)
 		pdulen -= 2;
 	/* FIXME really issue using two separate commands */
-	if(ret != NULL)
-		snprintf(ret, len, "%s%lu\r\n%s", cmd, ((unsigned long)pdulen
-					- 1) / 2, pdu);
+	snprintf(ret, len, "%s%lu\r\n%s", cmd, ((unsigned long)pdulen - 1) / 2,
+			pdu);
 	free(pdu);
 	return ret;
 }