diff --git a/src/compat/internal.h b/src/compat/internal.h
index d56f1a0..47d32cd 100644
--- a/src/compat/internal.h
+++ b/src/compat/internal.h
@@ -31,12 +31,10 @@
 #  define _WIN32_WINNT 0x0502
 #  include <windows.h>
 
-#  include <stdint.h>
-
-typedef int32_t cr_off32;
-typedef int64_t cr_off64;
-
 #  if defined(__MINGW32__) || defined(__MINGW64__)
+
+#  include "off_t.h"
+
 #   if !defined(__MINGW64__)
 #    define off_t cr_off32
 #   else
diff --git a/src/compat/off_t.h b/src/compat/off_t.h
new file mode 100644
index 0000000..24dc65d
--- /dev/null
+++ b/src/compat/off_t.h
@@ -0,0 +1,9 @@
+#ifndef OFF_T_H_
+# define OFF_T_H_
+
+# include <stdint.h>
+
+typedef int32_t cr_off32;
+typedef int64_t cr_off64;
+
+#endif /* !OFF_T_H_ */
diff --git a/src/compat/posix.h b/src/compat/posix.h
index b4a35b5..81af6b3 100644
--- a/src/compat/posix.h
+++ b/src/compat/posix.h
@@ -42,10 +42,7 @@
 # endif
 # if defined(__MINGW32__) || defined(__MINGW64__)
 
-# include <stdint.h>
-
-typedef int32_t cr_off32;
-typedef int64_t cr_off64;
+# include "off_t.h"
 
 #  if !defined(__MINGW64__)
 #   define off_t cr_off32