diff --git a/posix.cc b/posix.cc
index 4c086af6..368bf94f 100644
--- a/posix.cc
+++ b/posix.cc
@@ -33,7 +33,6 @@
 #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 cb0390bd..24100d9b 100644
--- a/posix.h
+++ b/posix.h
@@ -29,6 +29,7 @@
 #define FMT_POSIX_H_
 
 #include <errno.h>
+#include <sys/types.h>  // required for fcntl.h on MinGW
 #include <fcntl.h>  // for O_RDONLY
 #include <stdio.h>