diff --git a/tests/bluetooth/mesh_shell/prj.conf b/tests/bluetooth/mesh_shell/prj.conf
index bb4c878bdfd..043428e06a2 100644
--- a/tests/bluetooth/mesh_shell/prj.conf
+++ b/tests/bluetooth/mesh_shell/prj.conf
@@ -60,7 +60,7 @@ CONFIG_BT_MESH_PB_ADV=y
 CONFIG_BT_MESH_GATT_PROXY=y
 CONFIG_BT_MESH_NODE_ID_TIMEOUT=10
 
-CONFIG_BT_MESH_SUBNET_COUNT=2
+CONFIG_BT_MESH_SUBNET_COUNT=3
 CONFIG_BT_MESH_APP_KEY_COUNT=2
 # PTS requires more key slots when using Opcodes Aggregator.
 # First one is implicitly taken by Device Key.
@@ -75,5 +75,7 @@ CONFIG_LOG_PROCESS_THREAD_SLEEP_MS=250
 CONFIG_BT_MESH_IV_UPDATE_TEST=y
 CONFIG_BT_MESH_LOG_LEVEL_DBG=y
 CONFIG_BT_MESH_CDB=y
+CONFIG_BT_MESH_CDB_SUBNET_COUNT=3
+CONFIG_BT_MESH_CDB_APP_KEY_COUNT=2
 CONFIG_BT_MESH_PROVISIONER=y
 CONFIG_BT_MESH_STATISTIC=y