diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 780af07f..af23871d 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -22,6 +22,10 @@
 #  include "../nfd/nfd.h"
 #endif
 
+#ifndef M_PI_2
+#define M_PI_2 1.57079632679489661923
+#endif
+
 namespace tracy
 {