diff --git a/modules/calib3d/src/calibration.cpp b/modules/calib3d/src/calibration.cpp
index b3ed13ba1..b82d65551 100644
--- a/modules/calib3d/src/calibration.cpp
+++ b/modules/calib3d/src/calibration.cpp
@@ -3245,7 +3245,7 @@ static Mat prepareCameraMatrix(Mat& cameraMatrix0, int rtype)
 
 static Mat prepareDistCoeffs(Mat& distCoeffs0, int rtype)
 {
-    Mat distCoeffs = Mat::zeros(distCoeffs0.cols == 1 ? Size(1, 8) : Size(8, 1), rtype);
+    Mat distCoeffs = Mat::zeros(distCoeffs0.cols == 1 ? Size(1, 12) : Size(12, 1), rtype);
     if( distCoeffs0.size() == Size(1, 4) ||
        distCoeffs0.size() == Size(1, 5) ||
        distCoeffs0.size() == Size(1, 8) ||