diff --git a/include/transport/pqxxbackend.h b/include/transport/pqxxbackend.h
index 00581a2c3ae49166a8883401b7c01d6a8c43151f..21d54339cf20ceedebc7fad15e293bea4a286978 100644
--- a/include/transport/pqxxbackend.h
+++ b/include/transport/pqxxbackend.h
@@ -96,7 +96,7 @@ class PQXXBackend : public StorageBackend
 		void commitTransaction();
 
 	private:
-		bool exec(const std::string &query);
+		bool exec(const std::string &query, bool show_error = true);
 		Config *m_config;
 		std::string m_prefix;