diff --git a/posix.cc b/posix.cc
index 368bf94f..4c086af6 100644
--- a/posix.cc
+++ b/posix.cc
@@ -33,6 +33,7 @@
 #include "posix.h"
 
 #include <limits.h>
+#include <sys/types.h>
 #include <sys/stat.h>
 
 #ifndef _WIN32
diff --git a/posix.h b/posix.h
index 24100d9b..5acf64c6 100644
--- a/posix.h
+++ b/posix.h
@@ -28,8 +28,12 @@
 #ifndef FMT_POSIX_H_
 #define FMT_POSIX_H_
 
+#ifdef __MINGW32__
+// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
+# undef __STRICT_ANSI__
+#endif
+
 #include <errno.h>
-#include <sys/types.h>  // required for fcntl.h on MinGW
 #include <fcntl.h>  // for O_RDONLY
 #include <stdio.h>