diff --git a/src/insets/InsetInclude.cpp b/src/insets/InsetInclude.cpp
index 56454d747f..43d2ad8528 100644
--- a/src/insets/InsetInclude.cpp
+++ b/src/insets/InsetInclude.cpp
@@ -449,6 +449,7 @@ int InsetInclude::latex(odocstream & os, OutputParams const & runparams) const
 	// write it to a file (so far the complete file)
 	string exportfile;
 	string mangled;
+	// bug 5681
 	if (type(params()) == LISTINGS) {
 		exportfile = incfile;
 		mangled = DocFileName(included_file).mangledFilename();