diff --git a/apps/bttester/syscfg.yml b/apps/bttester/syscfg.yml
index 5db9af2ea8..bc5e0085a1 100644
--- a/apps/bttester/syscfg.yml
+++ b/apps/bttester/syscfg.yml
@@ -100,6 +100,7 @@ syscfg.vals:
     BLE_L2CAP_COC_MAX_NUM: 2
     BLE_L2CAP_SIG_MAX_PROCS: 2
     BLE_L2CAP_ENHANCED_COC: 1
+    BLE_EATT_CHAN_NUM: 5
     BLE_VERSION: 53
     # Some testcases require MPS < MTU
     BLE_L2CAP_COC_MPS: 100