diff --git a/gtsam/geometry/triangulation.h b/gtsam/geometry/triangulation.h
index ed61c75b5..3b58c2943 100644
--- a/gtsam/geometry/triangulation.h
+++ b/gtsam/geometry/triangulation.h
@@ -124,7 +124,17 @@ std::pair<NonlinearFactorGraph, Values> triangulationGraph(
   return std::make_pair(graph, values);
 }
 
-/// PinholeCamera specific version // TODO: (chris) why does this exist?
+#ifdef GTSAM_ALLOW_DEPRECATED_SINCE_V4
+/// DEPRECATED: PinholeCamera specific version
+template<class CALIBRATION>
+Point3 triangulateNonlinear(
+    const CameraSet<PinholeCamera<CALIBRATION> >& cameras,
+    const Point2Vector& measurements, const Point3& initialEstimate) {
+  return triangulateNonlinear<PinholeCamera<CALIBRATION> > //
+  (cameras, measurements, initialEstimate);
+}
+
+/// DEPRECATED: PinholeCamera specific version
 template<class CALIBRATION>
 std::pair<NonlinearFactorGraph, Values> triangulationGraph(
     const CameraSet<PinholeCamera<CALIBRATION> >& cameras,
@@ -133,6 +143,7 @@ std::pair<NonlinearFactorGraph, Values> triangulationGraph(
   return triangulationGraph<PinholeCamera<CALIBRATION> > //
   (cameras, measurements, landmarkKey, initialEstimate);
 }
+#endif
 
 /**
  * Optimize for triangulation
@@ -187,15 +198,6 @@ Point3 triangulateNonlinear(
   return optimize(graph, values, Symbol('p', 0));
 }
 
-/// PinholeCamera specific version  // TODO: (chris) why does this exist?
-template<class CALIBRATION>
-Point3 triangulateNonlinear(
-    const CameraSet<PinholeCamera<CALIBRATION> >& cameras,
-    const Point2Vector& measurements, const Point3& initialEstimate) {
-  return triangulateNonlinear<PinholeCamera<CALIBRATION> > //
-  (cameras, measurements, initialEstimate);
-}
-
 /**
  * Create a 3*4 camera projection matrix from calibration and pose.
  * Functor for partial application on calibration