diff --git a/src/branch2.hpp b/src/branch2.hpp
index a5f04cc8..75bbc8ad 100644
--- a/src/branch2.hpp
+++ b/src/branch2.hpp
@@ -1,4 +1,4 @@
-#include "filesystem.hpp"
+#include "ghc/filesystem.hpp"
 
 #include <stdint.h>