diff --git a/xs/src/libslic3r/WipeTower.cpp b/xs/src/libslic3r/WipeTower.cpp
index c8bfabdaf..b00263acf 100644
--- a/xs/src/libslic3r/WipeTower.cpp
+++ b/xs/src/libslic3r/WipeTower.cpp
@@ -1,6 +1,7 @@
 #include "WipeTower.hpp"
 
 #include <assert.h>
+#include <math.h>
 #include <fstream>
 #include <iostream>