diff --git a/modules/line_descriptor/perf/perf_matching.cpp b/modules/line_descriptor/perf/perf_matching.cpp
index 139e3d40a..def4dd014 100644
--- a/modules/line_descriptor/perf/perf_matching.cpp
+++ b/modules/line_descriptor/perf/perf_matching.cpp
@@ -101,7 +101,7 @@ uchar invertSingleBits( uchar dividend_char, int numBits )
   /* reconvert to decimal */
   uchar result = 0;
   for ( int i = (int) bin_vector.size() - 1; i >= 0; i-- )
-    result += (uchar) ( bin_vector[i] * pow( 2, i ) );
+    result += (uchar) ( bin_vector[i] * pow( 2.0, i ) );
 
   return result;
 }
diff --git a/modules/line_descriptor/test/test_matcher_regression.cpp b/modules/line_descriptor/test/test_matcher_regression.cpp
index df649c0d6..9af94f881 100644
--- a/modules/line_descriptor/test/test_matcher_regression.cpp
+++ b/modules/line_descriptor/test/test_matcher_regression.cpp
@@ -123,7 +123,7 @@ uchar CV_BinaryDescriptorMatcherTest::invertSingleBits( uchar dividend_char, int
   /* reconvert to decimal */
   uchar result = 0;
   for ( int i = (int) bin_vector.size() - 1; i >= 0; i-- )
-    result += (uchar) ( bin_vector[i] * pow( 2, i ) );
+    result += (uchar) ( bin_vector[i] * pow( 2.0, i ) );
 
   return result;
 }