1 files changed, 1 insertions, 1 deletions

diff --git a/tools/idevicediagnostics.c b/tools/idevicediagnostics.c
index 410d054..464df20 100644
--- a/tools/idevicediagnostics.c
+++ b/tools/idevicediagnostics.c
@@ -188,7 +188,7 @@ int main(int argc, char **argv)
 
         lockdownd_client_free(lockdown_client);
 
-        if ((ret == LOCKDOWN_E_SUCCESS) && (service->port > 0)) {
+        if ((ret == LOCKDOWN_E_SUCCESS) && service && (service->port > 0)) {
                 if (diagnostics_relay_client_new(device, service, &diagnostics_client) != DIAGNOSTICS_RELAY_E_SUCCESS) {
                         printf("Could not connect to diagnostics_relay!\n");
                         result = -1;