diff --git a/Include/fileutils.h b/Include/fileutils.h
index 5ddd511..bb90481 100644
--- a/Include/fileutils.h
+++ b/Include/fileutils.h
@@ -42,10 +42,6 @@
     int st_ctime_nsec;
     unsigned long st_file_attributes;
 };
-
-PyAPI_FUNC(void) _Py_time_t_to_FILE_TIME(time_t, int, FILETIME *);
-PyAPI_FUNC(void) _Py_attribute_data_to_stat(BY_HANDLE_FILE_INFORMATION *,
-                                            ULONG, struct _Py_stat_struct *);
 #else
 #  define _Py_stat_struct stat
 #endif
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 945c9d0..e381bf1 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -372,6 +372,12 @@
 
 #define DWORD_MAX 4294967295U
 
+#ifdef MS_WINDOWS
+/* defined in fileutils.c */
+PyAPI_FUNC(void) _Py_time_t_to_FILE_TIME(time_t, int, FILETIME *);
+PyAPI_FUNC(void) _Py_attribute_data_to_stat(BY_HANDLE_FILE_INFORMATION *,
+                                            ULONG, struct _Py_stat_struct *);
+#endif
 
 #ifdef MS_WINDOWS
 static int