diff --git a/mbtk/libgsw_lib/gsw_pm_interface.c b/mbtk/libgsw_lib/gsw_pm_interface.c
index 25acf7a..886a512 100755
--- a/mbtk/libgsw_lib/gsw_pm_interface.c
+++ b/mbtk/libgsw_lib/gsw_pm_interface.c
@@ -127,7 +127,7 @@
 static mbtk_lock_name_s lock_name[LOCK_MAX_SIZE]={0};
 
 static mbtk_log fun_ptr_log = NULL;
-void *dlHandle_sleep = NULL;
+static void *dlHandle_sleep = NULL;
 char *lynqLib_sleep = "/lib/libmbtk_lib.so";
 
 
@@ -161,12 +161,8 @@
     if(ret < 0)
     {
         LOGE("mbtk_autosuspend_enable FAIL.\n");
-        dlclose(dlHandle_sleep);
-        dlHandle_sleep = NULL;
         return GSW_HAL_NORMAL_FAIL;
     }
-    dlclose(dlHandle_sleep);
-    dlHandle_sleep = NULL;
     return GSW_HAL_SUCCESS;
 }
 
@@ -185,12 +181,8 @@
     if(ret < 0)
     {
         LOGE("mbtk_autosuspend_enable FAIL.\n");
-        dlclose(dlHandle_sleep);
-        dlHandle_sleep = NULL;
         return GSW_HAL_NORMAL_FAIL;
     }
-    dlclose(dlHandle_sleep);
-    dlHandle_sleep = NULL;
     return GSW_HAL_SUCCESS;
 }
 
@@ -209,8 +201,6 @@
     if(ret < 0)
     {
         LOGE("mbtk_lpm_init FAIL.\n");
-        dlclose(dlHandle_sleep);
-        dlHandle_sleep = NULL;
         return GSW_HAL_NORMAL_FAIL;
     }
     return GSW_HAL_SUCCESS;
@@ -248,8 +238,6 @@
     if(ret < 0)
     {
         LOGE("mbtk_wakelock_unlock FAIL.\n");
-        dlclose(dlHandle_sleep);
-        dlHandle_sleep = NULL;
         return GSW_HAL_NORMAL_FAIL;
     }
 
@@ -258,8 +246,6 @@
     if(ret < 0)
     {
         LOGE("mbtk_wakelock_destroy FAIL.\n");
-        dlclose(dlHandle_sleep);
-        dlHandle_sleep = NULL;
         return GSW_HAL_NORMAL_FAIL;
     }
     if (lock_name[i].name != NULL)
@@ -268,9 +254,6 @@
         lock_name[i].name = NULL;
         lock_name[i].fd = -1;
     }
-    
-    dlclose(dlHandle_sleep);
-    dlHandle_sleep = NULL;
     return GSW_HAL_SUCCESS;
 }
 
@@ -326,8 +309,6 @@
     lock_name[i].fd = lock_fd;
     ret = GSW_HAL_SUCCESS;
 end:
-    dlclose(dlHandle_sleep);
-    dlHandle_sleep = NULL;
     return ret;
 }