diff --git a/corsika/modules/urqmd/UrQMD.hpp b/corsika/modules/urqmd/UrQMD.hpp
index 9492f49f73a0327ee39bbbc1646d0a78ab2c58e3..3f6d3e9936f1fd13fcb831359f8faee6768f2948 100644
--- a/corsika/modules/urqmd/UrQMD.hpp
+++ b/corsika/modules/urqmd/UrQMD.hpp
@@ -16,6 +16,7 @@
 
 #include <corsika/setup/SetupStack.hpp>
 
+#include <boost/filesystem/path.hpp>
 #include <boost/multi_array.hpp>
 
 #include <array>