diff --git a/src/mm-modem-helpers.c b/src/mm-modem-helpers.c
index 43d162ce..ed04a329 100644
--- a/src/mm-modem-helpers.c
+++ b/src/mm-modem-helpers.c
@@ -2755,7 +2755,7 @@ mm_3gpp_parse_cesq_response (const gchar  *response,
     /* Response may be e.g.:
      * +CESQ: 99,99,255,255,20,80
      */
-    r = g_regex_new ("\\+CESQ: (\\d+),(\\d+),(\\d+),(\\d+),(\\d+),(\\d+)(?:\\r\\n)?", 0, 0, NULL);
+    r = g_regex_new ("\\+CESQ:\\s*(\\d+),(\\d+),(\\d+),(\\d+),(\\d+),(\\d+)(?:\\r\\n)?", 0, 0, NULL);
     g_assert (r != NULL);
 
     g_regex_match_full (r, response, strlen (response), 0, 0, &match_info, &inner_error);
diff --git a/src/tests/test-modem-helpers.c b/src/tests/test-modem-helpers.c
index f3cdb438..7684fce7 100644
--- a/src/tests/test-modem-helpers.c
+++ b/src/tests/test-modem-helpers.c
@@ -4171,6 +4171,13 @@ static const CesqResponseTest cesq_response_tests[] = {
         .gsm_info  = TRUE,  .rxlev = 10, .rssi = -101.0, .ber = 6,
         .umts_info = FALSE, .rscp_level = 255, .ecn0_level = 255,
         .lte_info  = FALSE, .rsrq_level = 255, .rsrp_level = 255,
+    },
+    {
+        /* No space after ':' */
+        .str       = "+CESQ:10,6,255,255,255,255",
+        .gsm_info  = TRUE,  .rxlev = 10, .rssi = -101.0, .ber = 6,
+        .umts_info = FALSE, .rscp_level = 255, .ecn0_level = 255,
+        .lte_info  = FALSE, .rsrq_level = 255, .rsrp_level = 255,
     }
 };