diff --git a/lib/db_ido_mysql/idomysqlconnection.cpp b/lib/db_ido_mysql/idomysqlconnection.cpp
index 6ea1dcfbe..3a20e47ac 100644
--- a/lib/db_ido_mysql/idomysqlconnection.cpp
+++ b/lib/db_ido_mysql/idomysqlconnection.cpp
@@ -813,6 +813,9 @@ void IdoMysqlConnection::InternalExecuteMultipleQueries(const std::vector<DbQuer
 {
 	AssertOnWorkQueue();
 
+	if (!GetConnected())
+		return;
+
 	BOOST_FOREACH(const DbQuery& query, queries) {
 		ASSERT(query.Category != DbCatInvalid);
 
diff --git a/lib/db_ido_pgsql/idopgsqlconnection.cpp b/lib/db_ido_pgsql/idopgsqlconnection.cpp
index ac312cf3f..809ace7ca 100644
--- a/lib/db_ido_pgsql/idopgsqlconnection.cpp
+++ b/lib/db_ido_pgsql/idopgsqlconnection.cpp
@@ -691,6 +691,9 @@ void IdoPgsqlConnection::InternalExecuteMultipleQueries(const std::vector<DbQuer
 {
 	AssertOnWorkQueue();
 
+	if (!GetConnected())
+		return;
+
 	BOOST_FOREACH(const DbQuery& query, queries) {
 		ASSERT(query.Category != DbCatInvalid);