2 files changed, 3 insertions, 2 deletions
diff --git a/opentrack-logic/tracker.cpp b/opentrack-logic/tracker.cpp
index 10512059..4fcce853 100644
--- a/opentrack-logic/tracker.cpp
+++ b/opentrack-logic/tracker.cpp
@@ -108,7 +108,7 @@ void Tracker::logic()
         m(5).opts.invert,
     };
 
-    static constexpr double pi = 3.141592653;
+    static constexpr double pi = OPENTRACK_PI;
     static constexpr double r2d = 180. / pi;
     static constexpr double d2r = pi / 180.;
 
diff --git a/opentrack-logic/tracker.h b/opentrack-logic/tracker.h
index 1c29fb8d..618de409 100644
--- a/opentrack-logic/tracker.h
+++ b/opentrack-logic/tracker.h
@@ -10,6 +10,7 @@
 
 #include <vector>
 
+#include "opentrack-compat/pi-constant.hpp"
 #include "opentrack-compat/timer.hpp"
 #include "opentrack/plugin-support.hpp"
 #include "mappings.hpp"
@@ -28,7 +29,7 @@
 class Pose
 {
 private:
-    static constexpr double pi = 3.141592653;
+    static constexpr double pi = OPENTRACK_PI;
     static constexpr double d2r = pi/180.0;
     static constexpr double r2d = 180./pi;