diff --git a/cpp/Makefile.am b/cpp/Makefile.am
index 9f6e80a1a..686f45a86 100644
--- a/cpp/Makefile.am
+++ b/cpp/Makefile.am
@@ -136,7 +136,7 @@ testSubgraphPreconditioner_LDADD   = libgtsam.la
 # Nonlinear inference 
 headers += Key.h NonlinearFactorGraph.h NonlinearFactorGraph-inl.h
 headers += NonlinearOptimizer.h NonlinearOptimizer-inl.h 
-sources += NonlinearFactor.cpp 
+headers += NonlinearFactor.h
 check_PROGRAMS += testNonlinearFactor testNonlinearFactorGraph testNonlinearOptimizer
 testNonlinearFactor_SOURCES      = $(example) testNonlinearFactor.cpp
 testNonlinearFactor_LDADD        = libgtsam.la
diff --git a/cpp/NonlinearFactor.cpp b/cpp/NonlinearFactor.cpp
deleted file mode 100644
index 541a06677..000000000
--- a/cpp/NonlinearFactor.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * @file    NonlinearFactor.cpp
- * @brief   nonlinear factor versions which assume a Gaussian noise on a measurement 
- * @brief   predicted by a non-linear function h nonlinearFactor
- * @author  Frank Dellaert
- * @author  Richard Roberts
- *
- * Earlier prototype contributors:  Kai Ni, Carlos Nieto, Christian Potthast
- */
-
-#include "NonlinearFactor.h"
-
-using namespace std;
-using namespace gtsam;
-
-/* ************************************************************************* */