diff --git a/modules/stitching/motion_estimators.cpp b/modules/stitching/motion_estimators.cpp
index 40e70ed669..e7cd012167 100644
--- a/modules/stitching/motion_estimators.cpp
+++ b/modules/stitching/motion_estimators.cpp
@@ -370,6 +370,7 @@ void BundleAdjuster::calcJacobian()
 
 //////////////////////////////////////////////////////////////////////////////
 
+// TODO replace with eigen
 void waveCorrect(vector<Mat> &rmats)
 {
     LOGLN("Wave correcting...");