diff --git a/modules/ccalib/src/omnidir.cpp b/modules/ccalib/src/omnidir.cpp
index a67a6bd6c07..6c54a527c1e 100644
--- a/modules/ccalib/src/omnidir.cpp
+++ b/modules/ccalib/src/omnidir.cpp
@@ -2222,7 +2222,7 @@ void cv::omnidir::stereoRectify(InputArray R, InputArray T, OutputArray R1, Outp
     e1.copyTo(_R1.row(0));
     e2.copyTo(_R1.row(1));
     e3.copyTo(_R1.row(2));
-    _R2 = R21 * _R1;
+    _R2 = _R1 * R21;
 
 }