diff --git a/mbtk/libgsw_lib/gsw_sec_interface.c b/mbtk/libgsw_lib/gsw_sec_interface.c
index 5892b01..925d531 100755
--- a/mbtk/libgsw_lib/gsw_sec_interface.c
+++ b/mbtk/libgsw_lib/gsw_sec_interface.c
@@ -16,7 +16,7 @@
 {
     int ret;
     char cmd[256];
-    if((login_name == NULL) || (pw ==NULL))
+    if((login_name == NULL) || (pw == NULL) || (strlen(pw) != pw_len))
     {
         return GSW_HAL_NORMAL_FAIL;
     }