--- IO-AIO/AIO.xs	2012/04/10 05:01:33	1.213
+++ IO-AIO/AIO.xs	2012/05/28 17:00:19	1.214
@@ -1688,7 +1688,7 @@
         RETVAL
 
 void
-mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
+mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
 	PPCODE:
         sv_unmagic (scalar, MMAP_MAGIC);
 {
@@ -1731,7 +1731,7 @@
         CODE:
 {
 	STRLEN svlen;
-  	void *addr = SvPVbyte (scalar, svlen);
+	void *addr = SvPVbyte (scalar, svlen);
         size_t len = SvUV (length);
 
         if (offset < 0)