diff --git a/src/usb_moded-android.c b/src/usb_moded-android.c
index 05e07aa..1ad01bd 100644
--- a/src/usb_moded-android.c
+++ b/src/usb_moded-android.c
@@ -109,7 +109,7 @@ int set_android_productid(char *id)
    int ret = 0;
 
    /* disable, set functions to "mass_storage", re-enable */
-   write_to_file("/sys/class/android_usb/android0/idProduct", id);
+   ret = write_to_file("/sys/class/android_usb/android0/idProduct", id);
    if(ret < 0)
 	return(1);
    else