diff --git a/platform/posix/le_device_db_fs.c b/platform/posix/le_device_db_fs.c
index d7974c0e4..f6b20c7c8 100644
--- a/platform/posix/le_device_db_fs.c
+++ b/platform/posix/le_device_db_fs.c
@@ -281,6 +281,8 @@ int le_device_db_add(int addr_type, bd_addr_t addr, sm_key_t irk){
     log_info("Central Device DB adding type %u - %s", addr_type, bd_addr_to_str(addr));
     log_info_key("irk", irk);
 
+    memset(&le_devices[index], 0, sizeof(le_device_memory_db_t));
+
     le_devices[index].addr_type = addr_type;
     memcpy(le_devices[index].addr, addr, 6);
     memcpy(le_devices[index].irk, irk, 16);
diff --git a/src/ble/le_device_db_tlv.c b/src/ble/le_device_db_tlv.c
index dec81c359..06b8e0c9b 100644
--- a/src/ble/le_device_db_tlv.c
+++ b/src/ble/le_device_db_tlv.c
@@ -234,6 +234,8 @@ int le_device_db_add(int addr_type, bd_addr_t addr, sm_key_t irk){
     log_info("LE Device DB adding type %u - %s", addr_type, bd_addr_to_str(addr));
     log_info_key("irk", irk);
 
+    memset(&le_devices[index], 0, sizeof(le_device_memory_db_t));
+
     entry.addr_type = addr_type;
     memcpy(entry.addr, addr, 6);
     memcpy(entry.irk, irk, 16);