diff --git a/pkgs/servers/sql/mariadb/default.nix b/pkgs/servers/sql/mariadb/default.nix
index d85d9fff433..830d217122a 100644
--- a/pkgs/servers/sql/mariadb/default.nix
+++ b/pkgs/servers/sql/mariadb/default.nix
@@ -71,6 +71,7 @@ stdenv.mkDerivation rec {
     sed -i "s,set(includedir.*$,SET(includedir $lib/include),g" storage/mroonga/vendor/groonga/CMakeLists.txt
     sed -i "/\"\$[{]CMAKE_INSTALL_PREFIX}\/\$[{]GRN_RELATIVE_PLUGINS_DIR}\"/d" storage/mroonga/vendor/groonga/CMakeLists.txt
     sed -i "s,set(GRN_PLUGINS_DIR.*$,SET(GRN_PLUGINS_DIR $lib/\$\{GRN_RELATIVE_PLUGINS_DIR}),g" storage/mroonga/vendor/groonga/CMakeLists.txt
+    sed -i 's,[^"]*/var/log,/var/log,g' storage/mroonga/vendor/groonga/CMakeLists.txt
   '';
 
   postInstall = ''