diff --git a/moo/mod/stdio.c b/moo/mod/stdio.c
index 6136ead..8e82226 100644
--- a/moo/mod/stdio.c
+++ b/moo/mod/stdio.c
@@ -169,7 +169,6 @@ static moo_pfrc_t __pf_puts (moo_t* moo, moo_ooi_t nargs, moo_oow_t limit)
 		puts_string:
 			if (fwrite (x->slot, 1, MOO_OBJ_GET_SIZE(x), stdio->fp) < MOO_OBJ_GET_SIZE(x))
 			{
-				moo_seterrnum (moo, moo_syserr_to_errnum(errno));
 				moo_seterrnum (moo, moo_syserr_to_errnum(errno));
 				goto softfail;
 			}