diff --git a/src/spicelib/devices/hicum2/hicumL2.cpp b/src/spicelib/devices/hicum2/hicumL2.cpp
index b39f917c5..c4398d095 100644
--- a/src/spicelib/devices/hicum2/hicumL2.cpp
+++ b/src/spicelib/devices/hicum2/hicumL2.cpp
@@ -37,6 +37,9 @@ Spice3 Implementation: 2019 Dietmar Warning, Markus Müller, Mario Krattenmacher
  */
 
 #include "cmath"
+#ifndef M_PI
+#define M_PI 3.1415926535897932384626433832795
+#endif 
 #include <duals/dual>
 #include "hicumL2.hpp"
 #include <functional>