diff --git a/src/ifcgeom/kernels/cgal/CgalIfcGeomWires.cpp b/src/ifcgeom/kernels/cgal/CgalIfcGeomWires.cpp
index 70d4fbee0a..457fc7dc63 100644
--- a/src/ifcgeom/kernels/cgal/CgalIfcGeomWires.cpp
+++ b/src/ifcgeom/kernels/cgal/CgalIfcGeomWires.cpp
@@ -1,12 +1,12 @@
+// For MSVC to have M_PI
+#define _USE_MATH_DEFINES
+#include <cmath>
+
 #include "CgalKernel.h"
 #include "../../../ifcgeom/schema_agnostic/cgal/CgalConversionResult.h"
 
 #define CgalKernel MAKE_TYPE_NAME(CgalKernel)
 
-// For MSVC to have M_PI
-#define _USE_MATH_DEFINES
-#include <cmath>
-
 bool IfcGeom::CgalKernel::convert(const IfcSchema::IfcPolyLoop* l, cgal_wire_t& result) {
   IfcSchema::IfcCartesianPoint::list::ptr points = l->Polygon();