diff --git a/cpp/VSLAMGraph.cpp b/cpp/VSLAMGraph.cpp
index 77b1a9691..bce5d344e 100644
--- a/cpp/VSLAMGraph.cpp
+++ b/cpp/VSLAMGraph.cpp
@@ -19,7 +19,7 @@ using namespace std;
 namespace gtsam {
 
 // explicit instantiation so all the code is there and we can link with it
-template class FactorGraph<VSLAMFactor>;
+template class FactorGraph<NonlinearFactor<VSLAMConfig> >;
 template class NonlinearFactorGraph<VSLAMConfig>;
 template class NonlinearOptimizer<VSLAMGraph,VSLAMConfig>;