diff --git a/src/cli_global.cpp b/src/cli_global.cpp
index 25178e6a2eeda9a77b0827a54ce8a31ef3ba4c05..fe65037a94810acfca37566f6aeae7cc69febbaf 100644
--- a/src/cli_global.cpp
+++ b/src/cli_global.cpp
@@ -7,6 +7,8 @@
 
 #include "cli_global.hpp"
 
+#include "orcus/global.hpp"
+
 #include <iostream>
 #include <fstream>
 
@@ -40,7 +42,7 @@ output_stream::output_stream(const boost::program_options::variables_map& vm) :
     }
 
     // Output to stdout when output path is not given.
-    m_ofs = std::make_unique<std::ofstream>(output_path.data());
+    m_ofs = orcus::make_unique<std::ofstream>(output_path.data());
     m_os = m_ofs.get();
 }
 
diff --git a/src/spreadsheet/document.cpp b/src/spreadsheet/document.cpp
index 1471bc367712082b821e294cf68b29e2ca228efc..eaed607693a80500985688dae86115bceffd4c78 100644
--- a/src/spreadsheet/document.cpp
+++ b/src/spreadsheet/document.cpp
@@ -489,7 +489,7 @@ void document::dump(dump_format_t format, const std::string& output) const
             }
 
             // Output to stdout when output path is not given.
-            fs = std::make_unique<std::ofstream>(output.data());
+            fs = orcus::make_unique<std::ofstream>(output.data());
             ostrm = fs.get();
         }