diff --git a/src/tests/check_layout.cpp b/src/tests/check_layout.cpp
index d4180d57b0..af2a9c2826 100644
--- a/src/tests/check_layout.cpp
+++ b/src/tests/check_layout.cpp
@@ -47,7 +47,7 @@ using namespace std;
 bool test_Layout(string const & input, string const & output)
 {
 	FileName const ifn(makeAbsPath(input));
-    LayoutFileList& l = LayoutFileList::get();
+    LayoutFileList & l = LayoutFileList::get();
 	LayoutFileIndex i = l.addLocalLayout(ifn.onlyFileName(), ifn.onlyPath().absFileName());
 	if (i.empty()) {
 		cerr << "Could not read layout file " << input << ".layout.\n";