diff --git a/nonlinear/FusionTupleConfig.h b/nonlinear/FusionTupleConfig.h
index e6719c107..3846b9351 100644
--- a/nonlinear/FusionTupleConfig.h
+++ b/nonlinear/FusionTupleConfig.h
@@ -348,6 +348,7 @@ struct FusionTupleConfig1 : public FusionTupleConfig<boost::fusion::set<C1> > {
 	typedef C1 Config1;
 
 	FusionTupleConfig1() {}
+	FusionTupleConfig1(const Base& c) : Base(c) {}
 	FusionTupleConfig1(const C1& c1) : Base(boost::fusion::make_set(c1)) {}
 
 	const Config1& first() const { return boost::fusion::at_key<C1>(this->base_tuple_); }
@@ -362,6 +363,7 @@ struct FusionTupleConfig2 : public FusionTupleConfig<boost::fusion::set<C1, C2>
 	typedef C2 Config2;
 
 	FusionTupleConfig2() {}
+	FusionTupleConfig2(const Base& c) : Base(c) {}
 	FusionTupleConfig2(const C1& c1, const C2& c2) : Base(boost::fusion::make_set(c1, c2)) {}
 
 	const Config1& first()  const { return boost::fusion::at_key<C1>(this->base_tuple_); }
@@ -377,6 +379,7 @@ struct FusionTupleConfig3 : public FusionTupleConfig<boost::fusion::set<C1, C2,
 	typedef C3 Config3;
 
 	FusionTupleConfig3() {}
+	FusionTupleConfig3(const Base& c) : Base(c) {}
 	FusionTupleConfig3(const C1& c1, const C2& c2, const C3& c3)
 		: Base(boost::fusion::make_set(c1, c2, c3)) {}
 
diff --git a/tests/testFusionTupleConfig.cpp b/tests/testFusionTupleConfig.cpp
index d30d9f570..91d6d48b0 100644
--- a/tests/testFusionTupleConfig.cpp
+++ b/tests/testFusionTupleConfig.cpp
@@ -11,14 +11,16 @@
 
 #include <Pose2.h>
 #include <Point2.h>
-#include <Pose3.h>
-#include <Point3.h>
-#include <Key.h>
-#include <Vector.h>
 #include <Key.h>
 #include <VectorConfig.h>
 
+#include "BearingRangeFactor.h"
+#include "PriorFactor.h"
+#include "BetweenFactor.h"
+
+#include <NonlinearFactorGraph-inl.h>
 #include <LieConfig-inl.h>
+#include <NonlinearOptimizer-inl.h>
 #include <FusionTupleConfig.h>
 
 using namespace boost;
@@ -471,6 +473,46 @@ TEST( testFusionTupleConfig, configN)
 	EXPECT(assert_equal(cfg2, cfg3));
 }
 
+/* ************************************************************************* */
+TEST( testFusionTupleConfig, basic_factor)
+{
+	// planar example system
+	typedef FusionTupleConfig2<PoseConfig, PointConfig> Config; // pair config
+	typedef FusionTupleConfig1<PoseConfig> TestPoseConfig;
+	typedef NonlinearFactorGraph<Config> Graph;
+	typedef NonlinearOptimizer<Graph,Config> Optimizer;
+
+	// Factors
+//	typedef PriorFactor<TestPoseConfig, PoseKey, Pose2> Prior; // fails to add to graph
+	typedef PriorFactor<Config, PoseKey, Pose2> Prior;
+	typedef BetweenFactor<Config, PoseKey, Pose2> Odometry;
+	typedef BearingRangeFactor<Config, PoseKey, PointKey> BearingRange;
+
+	PoseKey pose1k(1), pose2k(2), pose3k(3);
+	Pose2 pose1, pose2(2.0, 0.0, 0.0), pose3(4.0, 0.0, 0.0);
+	SharedDiagonal prior_model = noiseModel::Isotropic::Sigma(3, 0.1);
+	SharedDiagonal odom_model = noiseModel::Diagonal::Sigmas(Vector_(3, 0.2, 0.2, 0.1));
+
+	Graph graph;
+	graph.add(Prior(pose1k, pose1, prior_model));
+	graph.add(Odometry(pose1k, pose2k, between(pose1, pose2), odom_model));
+	graph.add(Odometry(pose2k, pose3k, between(pose2, pose3), odom_model));
+
+	Config init;
+	init.insert(pose1k, Pose2(0.2, 0.4, 0.0));
+	init.insert(pose2k, Pose2(1.8,-0.4, 0.3));
+	init.insert(pose3k, Pose2(4.1, 0.0,-0.2));
+
+	Optimizer::shared_config actual = Optimizer::optimizeLM(graph, init);
+
+	Config expected;
+	expected.insert(pose1k, pose1);
+	expected.insert(pose2k, pose2);
+	expected.insert(pose3k, pose3);
+
+	EXPECT(assert_equal(expected, *actual, tol));
+}
+
 /* ************************************************************************* */
 int main() { TestResult tr; return TestRegistry::runAllTests(tr); }
 /* ************************************************************************* */