diff --git a/modules/core/src/stat.cpp b/modules/core/src/stat.cpp
index 8ad2aabb8b..cafdf0fd3b 100644
--- a/modules/core/src/stat.cpp
+++ b/modules/core/src/stat.cpp
@@ -2463,7 +2463,7 @@ struct BatchDistInvoker : public ParallelLoopBody
 }
 
 void cv::batchDistance( InputArray _src1, InputArray _src2,
-                        OutputArray _dist, int dtype, OutputArray _nidx,
+                        InputOutputArray _dist, int dtype, InputOutputArray _nidx,
                         int normType, int K, InputArray _mask,
                         int update, bool crosscheck )
 {
@@ -2479,8 +2479,6 @@ void cv::batchDistance( InputArray _src1, InputArray _src2,
     }
     CV_Assert( (type == CV_8U && dtype == CV_32S) || dtype == CV_32F);
 
-    K = std::min(K, src2.rows);
-
     _dist.create(src1.rows, (K > 0 ? K : src2.rows), dtype);
     Mat dist = _dist.getMat(), nidx;
     if( _nidx.needed() )