diff --git a/mmap.h b/mmap.h
index e0174d4..911ee86 100644
--- a/mmap.h
+++ b/mmap.h
@@ -8,7 +8,7 @@ extern char* mmap_read(const char *filename,unsigned long* filesize);
 /* open file for writing, mmap whole file privately (copy on write),
  * close file, write length of map in filesize and return pointer to
  * map. */
-extern char* mmap_write(const char *filename,unsigned long* filesize);
+extern char* mmap_private(const char *filename,unsigned long* filesize);
 
 /* open file for writing, mmap whole file shared, close file, write
  * length of map in filesize and return pointer to map. */