diff --git a/gtsam_unstable/nonlinear/ExpressionFactorGraph.h b/gtsam_unstable/nonlinear/ExpressionFactorGraph.h
index 0edac858d..122bd429f 100644
--- a/gtsam_unstable/nonlinear/ExpressionFactorGraph.h
+++ b/gtsam_unstable/nonlinear/ExpressionFactorGraph.h
@@ -18,7 +18,7 @@
 
 #pragma once
 
-#include <gtsam_unstable/nonlinear/ExpressionFactor.h>
+#include <gtsam/nonlinear/ExpressionFactor.h>
 #include <gtsam/nonlinear/NonlinearFactorGraph.h>
 
 namespace gtsam {