diff --git a/mbtk/libgsw_lib/gsw_sim_interface.c b/mbtk/libgsw_lib/gsw_sim_interface.c
index e4c5966..cdcc9a7 100755
--- a/mbtk/libgsw_lib/gsw_sim_interface.c
+++ b/mbtk/libgsw_lib/gsw_sim_interface.c
@@ -380,13 +380,13 @@
             }
             case MBTK_SIM_NOT_READY:
             {
-                *sim_state = SIM_STATUS_PRESENT;
+                *sim_state = SIM_STATUS_ERROR;// not SIM_STATUS_PRESENT, changed for gsw requirement, hq at 250606
                 break;
             }
                 
             case MBTK_SIM_READY:
             {
-                *sim_state = SIM_STATUS_READY;
+                *sim_state = SIM_STATUS_PRESENT;// not SIM_STATUS_READY, changed for gsw requirement, hq at 250606
                 break;
             }