diff --git a/crypto/sha/asm/sha1-ia64.pl b/crypto/sha/asm/sha1-ia64.pl
index aa18c1089b289a922a9d6416f7e6d2d6ea128c58..51c4f47ecbdc215d6457c8d3c1ac3d16e9db9733 100644
--- a/crypto/sha/asm/sha1-ia64.pl
+++ b/crypto/sha/asm/sha1-ia64.pl
@@ -302,4 +302,5 @@ $code.=<<___;
 stringz	"SHA1 block transform for IA64, CRYPTOGAMS by <appro\@openssl.org>"
 ___
 
+$output=shift and open STDOUT,">$output";
 print $code;