diff --git a/test/gtest-extra-test.cc b/test/gtest-extra-test.cc
index 622dcdcb..12c893c8 100644
--- a/test/gtest-extra-test.cc
+++ b/test/gtest-extra-test.cc
@@ -38,10 +38,6 @@
 
 #include "util.h"
 
-#ifdef __MINGW32__
-# undef fileno
-#endif
-
 namespace {
 
 #ifdef _MSC_VER
@@ -376,7 +372,7 @@ TEST(OutputRedirectTest, FlushErrorInCtor) {
 
 TEST(OutputRedirectTest, DupErrorInCtor) {
   BufferedFile f = open_buffered_file();
-  int fd = f.fileno();
+  int fd = (f.fileno)();
   File copy = File::dup(fd);
   FMT_POSIX(close(fd));
   OutputRedirect *redir = 0;
diff --git a/test/posix-test.cc b/test/posix-test.cc
index 3f897741..701fc427 100644
--- a/test/posix-test.cc
+++ b/test/posix-test.cc
@@ -31,6 +31,10 @@
 #include "posix.h"
 #include "util.h"
 
+#ifdef __MINGW32__
+# undef fileno
+#endif
+
 using fmt::BufferedFile;
 using fmt::ErrorCode;
 using fmt::File;