diff --git a/OpenSim/Simulation/Model/Muscle.cpp b/OpenSim/Simulation/Model/Muscle.cpp
index 4d07a35cf0..3cff280d57 100644
--- a/OpenSim/Simulation/Model/Muscle.cpp
+++ b/OpenSim/Simulation/Model/Muscle.cpp
@@ -26,7 +26,7 @@
 //=============================================================================
 #include "Muscle.h"
 
-#include "GeometryPath.h"
+
 #include "Model.h"
 #include <OpenSim/Common/XMLDocument.h>