diff --git a/src/test/libslic3r/test_fill.cpp b/src/test/libslic3r/test_fill.cpp
index 604da6dae..10d69536d 100644
--- a/src/test/libslic3r/test_fill.cpp
+++ b/src/test/libslic3r/test_fill.cpp
@@ -1,6 +1,6 @@
 #include <catch.hpp>
 #include "test_data.hpp"
-#include "Fill.hpp"
+#include "Fill/Fill.hpp"
 /* 
 BEGIN {
     use FindBin;