diff --git a/libraries/tests/net/cellular/sms/ubloxusbgsm/main.cpp b/libraries/tests/net/cellular/sms/ubloxusbgsm/main.cpp
index 4a15d11ef6..7887ef3d96 100644
--- a/libraries/tests/net/cellular/sms/ubloxusbgsm/main.cpp
+++ b/libraries/tests/net/cellular/sms/ubloxusbgsm/main.cpp
@@ -1,10 +1,24 @@
 #include "UBloxUSBGSMModem.h"
 #include "smstest.h"
 
-int main()
+void test(const void* data)
 {
     UbloxUSBGSMModem modem;
 
     smstest(modem);
+    while (true);
+}
+
+int main()
+{
+    Thread testTask(test, NULL, osPriorityNormal, 1024 * 4);
+    DigitalOut led(LED1);
+
+    while (true)
+    {
+        led = !led;
+        Thread::wait(1000);  
+    }
+    return 0;
 }
 
diff --git a/workspace_tools/synch.py b/workspace_tools/synch.py
index dcfa0b3473..9dc1f7313c 100644
--- a/workspace_tools/synch.py
+++ b/workspace_tools/synch.py
@@ -63,6 +63,7 @@ OFFICIAL_CODE = (
     ("CellularUSBModem", "net/cellular/CellularUSBModem"),
     ("UbloxUSBModem", "net/cellular/UbloxUSBModem"),
     ("UbloxModemHTTPClientTest", ["tests/net/cellular/http/common", "tests/net/cellular/http/ubloxusbgsm"]),
+    ("UbloxModemSMSTest", ["tests/net/cellular/sms/common", "tests/net/cellular/sms/ubloxusbgsm"]),
 )