diff --git a/test/map_client/btstack_config.h b/test/map_client/btstack_config.h
index 87eb27c4a..8bea80560 100644
--- a/test/map_client/btstack_config.h
+++ b/test/map_client/btstack_config.h
@@ -33,5 +33,6 @@
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE (1691 + 4)
 #define HCI_INCOMING_PRE_BUFFER_SIZE 14 // sizeof BNEP header, avoid memcpy
+#define NVM_NUM_DEVICE_DB_ENTRIES      20
 
 #endif