diff --git a/gtsam/slam/slam.i b/gtsam/slam/slam.i
index a3d5be246..1e159ec5f 100644
--- a/gtsam/slam/slam.i
+++ b/gtsam/slam/slam.i
@@ -316,13 +316,18 @@ class InitializePose3 {
   static gtsam::Values initialize(const gtsam::NonlinearFactorGraph& graph);
 };
 
-#include <gtsam/slam/KarcherMeanFactor-inl.h>
+#include <gtsam/slam/KarcherMeanFactor.h>
 template <T = {gtsam::Point2, gtsam::Rot2, gtsam::Pose2, gtsam::Point3,
                gtsam::SO3, gtsam::SO4, gtsam::Rot3, gtsam::Pose3}>
 virtual class KarcherMeanFactor : gtsam::NonlinearFactor {
   KarcherMeanFactor(const gtsam::KeyVector& keys);
 };
   
+template <class T>
+T FindKarcherMean(const std::vector<T, Eigen::aligned_allocator<T>> &rotations);
+
+template <class T> T FindKarcherMean(std::initializer_list<T> &&rotations);
+  
 class Rot3Vector {
   Rot3Vector();
   size_t size() const;