diff --git a/src/libslic3r/PrintApply.cpp b/src/libslic3r/PrintApply.cpp
index 5ad7e2ccdee..c7fb3bf0fac 100644
--- a/src/libslic3r/PrintApply.cpp
+++ b/src/libslic3r/PrintApply.cpp
@@ -1,3 +1,4 @@
+#include "ClipperUtils.hpp"
 #include "Model.hpp"
 #include "Print.hpp"