diff --git a/gtsam/sfm/sfm.i b/gtsam/sfm/sfm.i
index 26dc20c3e..922ba9efc 100644
--- a/gtsam/sfm/sfm.i
+++ b/gtsam/sfm/sfm.i
@@ -329,7 +329,7 @@ class MatchIndicesMap {
   size_t size() const;
   bool empty() const;
   void clear();
-  gtsam::gtsfm::CorrespondenceIndices at(const pair<size_t, size_t>& keypair) const;
+  gtsam::gtsfm::CorrespondenceIndices at(const IndexPair& keypair) const;
 };
 
 class Keypoints {
@@ -350,6 +350,7 @@ class KeypointsVector {
 gtsam::SfmTrack2dVector tracksFromPairwiseMatches(
     const gtsam::gtsfm::MatchIndicesMap& matches_dict,
     const gtsam::gtsfm::KeypointsVector& keypoints_list, bool verbose = false);
+
 }  // namespace gtsfm
 
 }  // namespace gtsam