diff --git a/src/Mod/Robot/App/Trajectory.cpp b/src/Mod/Robot/App/Trajectory.cpp
index 492260658b..564499260a 100644
--- a/src/Mod/Robot/App/Trajectory.cpp
+++ b/src/Mod/Robot/App/Trajectory.cpp
@@ -43,7 +43,6 @@
 
 
 #ifndef M_PI
-#define M_PI 3.14159265358979323846
 #define M_PI 3.14159265358979323846 /* pi */
 #endif
 
@@ -53,7 +52,6 @@
 
 using namespace Robot;
 using namespace Base;
-// using namespace KDL;
 
 
 TYPESYSTEM_SOURCE(Robot::Trajectory, Base::Persistence)