diff --git a/cmake/FindMariaDBConnector.cmake b/cmake/FindMariaDBConnector.cmake
index a967c400b..472ba20d9 100644
--- a/cmake/FindMariaDBConnector.cmake
+++ b/cmake/FindMariaDBConnector.cmake
@@ -42,7 +42,7 @@ if(HAVE_MARIADB_CONNECTOR)
   message(STATUS "Found MariaDB Connector-C")
   set(MARIADB_CONNECTOR_FOUND TRUE CACHE INTERNAL "" FORCE)
 else()
-  unset(MARIADB_CONNECTOR_FOUND)
+  set(MARIADB_CONNECTOR_FOUND FALSE CACHE INTERNAL "")
   unset(MARIADB_CONNECTOR_STATIC_FOUND)
   unset(MARIADB_CONNECTOR_LIBRARIES)
   unset(MARIADB_CONNECTOR_STATIC_LIBRARIES)