diff --git a/src/slic3r/GUI/MeshUtils.hpp b/src/slic3r/GUI/MeshUtils.hpp
index 11ebf93864..cc961ee8f1 100644
--- a/src/slic3r/GUI/MeshUtils.hpp
+++ b/src/slic3r/GUI/MeshUtils.hpp
@@ -3,6 +3,7 @@
 
 #include "libslic3r/Point.hpp"
 #include "libslic3r/Geometry.hpp"
+#include "libslic3r/TriangleMesh.hpp"
 #include "libslic3r/SLA/IndexedMesh.hpp"
 #include "admesh/stl.h"