diff --git a/plugins/mm-modem-mbm.c b/plugins/mm-modem-mbm.c
index 9002ddcf..3a2cd424 100644
--- a/plugins/mm-modem-mbm.c
+++ b/plugins/mm-modem-mbm.c
@@ -926,7 +926,7 @@ grab_port (MMModem *modem,
         mm_at_serial_port_add_unsolicited_msg_handler (MM_AT_SERIAL_PORT (port), regex, mbm_pacsp_received, modem, NULL);
         g_regex_unref (regex);
 
-        regex = g_regex_new ("\\r\\n\\+CIEV: (\\d),(\\d)\\r\\n", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
+        regex = g_regex_new ("\\r\\n\\+CIEV: (\\d+),(\\d)\\r\\n", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
         mm_at_serial_port_add_unsolicited_msg_handler (MM_AT_SERIAL_PORT (port), regex, mbm_ciev_received, modem, NULL);
         g_regex_unref (regex);