diff --git a/modules/core/include/opencv2/core/operations.hpp b/modules/core/include/opencv2/core/operations.hpp

index 0d0f7c7..3988e96 100644

--- a/modules/core/include/opencv2/core/operations.hpp

+++ b/modules/core/include/opencv2/core/operations.hpp

@@ -2554,7 +2554,7 @@ AutoBuffer<_Tp, fixed_size>::AutoBuffer(const AutoBuffer<_Tp, fixed_size>& abuf

 {

     ptr = buf;

     sz = fixed_size;

-    allocate(abuf.size);

+    allocate(abuf.size.size());

     for( size_t i = 0; i < sz; i++ )

         ptr[i] = abuf.ptr[i];

 }

@@ -2565,7 +2565,7 @@ AutoBuffer<_Tp, fixed_size>::operator = (const AutoBuffer<_Tp, fixed_size>& abuf

     if( this != &abuf )

     {

         deallocate();

-        allocate(abuf.size);

+        allocate(abuf.size());

         for( size_t i = 0; i < sz; i++ )

             ptr[i] = abuf.ptr[i];

     }