diff --git a/plugins/huawei/mm-broadband-modem-huawei.c b/plugins/huawei/mm-broadband-modem-huawei.c
index 80c8e7b1..695b9274 100644
--- a/plugins/huawei/mm-broadband-modem-huawei.c
+++ b/plugins/huawei/mm-broadband-modem-huawei.c
@@ -793,7 +793,7 @@ load_current_bands_finish (MMIfaceModem *self,
                            GError **error)
 {
     const gchar *response;
-    GArray *bands_array;
+    GArray *bands_array = NULL;
 
     response = mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, error);
     if (!response)
diff --git a/src/mm-serial-port.c b/src/mm-serial-port.c
index 545e7074..6db2efdf 100644
--- a/src/mm-serial-port.c
+++ b/src/mm-serial-port.c
@@ -868,7 +868,7 @@ mm_serial_port_open (MMSerialPort *self, GError **error)
     const char *device;
     struct serial_struct sinfo = { 0 };
     GTimeVal tv_start, tv_end;
-    int errno_save;
+    int errno_save = 0;
 
     g_return_val_if_fail (MM_IS_SERIAL_PORT (self), FALSE);