diff --git a/main.cpp b/main.cpp
index 7b3f3dc..635fa44 100644
--- a/main.cpp
+++ b/main.cpp
@@ -224,7 +224,7 @@ InputExtractor::List InputExtractor::operator()(const Path::Path &file, const Me
 	};
 
 	IncludeCommands["include"] = IncludeCommands["input"];
-	IncludeCommands["lstinputlisting"] = [file](List &l, std::string a){ l.push_back(fixFilename(a, file));	};
+	IncludeCommands["lstinputlisting"] = [file](List &l, std::string a){ if (!a.empty()) { l.push_back(fixFilename(a, file)); } };
 
 	MemoryString::const_iterator current = str.begin();