diff --git a/modules/line_descriptor/include/opencv2/line_descriptor/descriptor.hpp b/modules/line_descriptor/include/opencv2/line_descriptor/descriptor.hpp
index 86366323e..bc7ac1e80 100644
--- a/modules/line_descriptor/include/opencv2/line_descriptor/descriptor.hpp
+++ b/modules/line_descriptor/include/opencv2/line_descriptor/descriptor.hpp
@@ -58,7 +58,7 @@ namespace cv
 
 CV_EXPORTS bool initModule_line_descriptor();
 
-class CV_EXPORTS_W KeyLine
+struct CV_EXPORTS_W_SIMPLE KeyLine
 {
  public:
   /* orientation of the line */
diff --git a/modules/line_descriptor/src/binary_descriptor_matcher.cpp b/modules/line_descriptor/src/binary_descriptor_matcher.cpp
index 38a82b13c..541f6d159 100644
--- a/modules/line_descriptor/src/binary_descriptor_matcher.cpp
+++ b/modules/line_descriptor/src/binary_descriptor_matcher.cpp
@@ -105,7 +105,7 @@ void BinaryDescriptorMatcher::checkKDistances( UINT32 * numres, int k, std::vect
   {
     if( ( * ( numres_tmp + j ) ) > 0 )
     {
-      for ( int i = 0; i < ( * ( numres_tmp + j ) ) && k_to_found > 0; i++ )
+      for ( int i = 0; i < (int)( * ( numres_tmp + j ) ) && k_to_found > 0; i++ )
       {
         k_distances.push_back( j );
         k_to_found--;