diff --git a/bta/gatt/bta_gattc_act.cc b/bta/gatt/bta_gattc_act.cc
index 486f9f34f7..035c6017d9 100644
--- a/bta/gatt/bta_gattc_act.cc
+++ b/bta/gatt/bta_gattc_act.cc
@@ -1166,15 +1166,15 @@ static void bta_gattc_conn_cback(tGATT_IF gattc_if, const RawAddress& bdaddr,
               LOG_INFO("LL_CONNECTION_UPDATE_IND %s", (char*)bdname.name);
               if(strncmp((char*)bdname.name, "BOS_KR01", 8) == 0)
               {
-                L2CA_UpdateBleConnParams(bdaddr,  8, 8, 149, 1000, 0, 8);
+                L2CA_UpdateBleConnParams(bdaddr,  24, 24, 149, 1000, 0, 8); /* 8*1.25 = 10ms, 133, 10s supervision timeout, min_ce 0, max_ce 8 */
               }
               else if(strncmp((char*)bdname.name, "BRM_SA02", 8) == 0)
               {
-                L2CA_UpdateBleConnParams(bdaddr,  9, 9, 266, 1000, 0, 8);
+                L2CA_UpdateBleConnParams(bdaddr,  24, 24, 266, 1000, 0, 8);
               }
               else 
               {
-                L2CA_UpdateBleConnParams(bdaddr,  9, 9, 133, 1000, 0, 8 );
+                L2CA_UpdateBleConnParams(bdaddr,  24, 24, 133, 1000, 0, 8);
               }
             }
             else 
diff --git a/stack/include/btm_ble_api_types.h b/stack/include/btm_ble_api_types.h
index fe5a7fb8c2..630fcfeb07 100644
--- a/stack/include/btm_ble_api_types.h
+++ b/stack/include/btm_ble_api_types.h
@@ -121,7 +121,7 @@ typedef uint8_t tBTM_BLE_SFP;
 #define BTM_BLE_SCAN_WIN_MAX 0x4000
 #define BTM_BLE_EXT_SCAN_INT_MAX 0x00FFFFFF
 #define BTM_BLE_EXT_SCAN_WIN_MAX 0xFFFF
-#define BTM_BLE_CONN_INT_MIN 0x0006
+#define BTM_BLE_CONN_INT_MIN 24 //0x0006
 #define BTM_BLE_CONN_INT_MAX 0x0C80
 #define BTM_BLE_CONN_LATENCY_MAX 500
 #define BTM_BLE_CONN_SUP_TOUT_MIN 0x000A
@@ -191,7 +191,7 @@ typedef uint8_t tBTM_BLE_SFP;
 
 /* minimum acceptable connection interval */
 #ifndef BTM_BLE_CONN_INT_MIN_LIMIT
-#define BTM_BLE_CONN_INT_MIN_LIMIT 0x0009
+#define BTM_BLE_CONN_INT_MIN_LIMIT 24 //0x0009
 #endif
 
 /* minimum acceptable connection interval when there is bonded Hearing Aid