diff --git a/ble/central_device_db.h b/ble/central_device_db.h
index df0b1d442..cdff5ff6e 100644
--- a/ble/central_device_db.h
+++ b/ble/central_device_db.h
@@ -114,4 +114,8 @@ void central_device_db_counter_set(int index, uint32_t counter);
  */
 void central_device_db_remove(int index);
 
+#if defined __cplusplus
+}
+#endif
+
 #endif // __CENTRAL_DEVICE_DB_H