diff --git a/src/ble/le_device_db_tlv.c b/src/ble/le_device_db_tlv.c
index 04d5fffae..01046fde4 100644
--- a/src/ble/le_device_db_tlv.c
+++ b/src/ble/le_device_db_tlv.c
@@ -180,6 +180,9 @@ int le_device_db_max_count(void){
 }
 
 void le_device_db_remove(int index){
+    btstack_assert(index >= 0);
+    btstack_assert(index < le_device_db_max_count());
+    
     // check if entry exists
     if (entry_map[index] == 0u) return;