Clean code

diff --git a/kernel/src/bbtkBlackBox.cxx b/kernel/src/bbtkBlackBox.cxx
index f2471fa458b1c173bccae60da8a21425451cccf7..091cdddac41a9db8d401993ef4b796afa2468734 100644 (file)
--- a/kernel/src/bbtkBlackBox.cxx
+++ b/kernel/src/bbtkBlackBox.cxx
@@ -663,7 +663,7 @@ namespace bbtk
 
       
       auto stop       = std::chrono::high_resolution_clock::now();
-      auto duration   = duration_cast<std::chrono::microseconds>(stop - start);
+      auto duration   = std::chrono::duration_cast<std::chrono::microseconds>(stop - start);
       printf("EED BlackBox::bbExecute  time= %ld  %s \n", duration.count() , bbGetFullName().c_str() );
       printf("EED BlackBox::bbExecute  end %s \n", bbGetFullName().c_str() );