diff --git a/xs/xsp/GCode.xsp b/xs/xsp/GCode.xsp
index fea8f1f4a..d1f53f6e8 100644
--- a/xs/xsp/GCode.xsp
+++ b/xs/xsp/GCode.xsp
@@ -4,7 +4,6 @@
 #include <xsinit.h>
 #include "libslic3r/GCode.hpp"
 #include "libslic3r/GCode/CoolingBuffer.hpp"
-//#include "libslic3r/GCode/PreviewData.hpp"
 %}
 
 %name{Slic3r::GCode::CoolingBuffer} class CoolingBuffer {