diff --git a/samples/cpp/calibration.cpp b/samples/cpp/calibration.cpp
index 23681fc927..256ec6c0ed 100644
--- a/samples/cpp/calibration.cpp
+++ b/samples/cpp/calibration.cpp
@@ -461,7 +461,7 @@ int main( int argc, char** argv )
         {
             case CHESSBOARD:
                 found = findChessboardCorners( view, boardSize, pointbuf,
-                    CV_CALIB_CB_ADAPTIVE_THRESH & CV_CALIB_CB_FAST_CHECK & CV_CALIB_CB_NORMALIZE_IMAGE);
+                    CV_CALIB_CB_ADAPTIVE_THRESH | CV_CALIB_CB_FAST_CHECK | CV_CALIB_CB_NORMALIZE_IMAGE);
                 break;
             case CIRCLES_GRID:
                 found = findCirclesGrid( view, boardSize, pointbuf );