diff --git a/comms/p5-Device-SerialPort/Makefile b/comms/p5-Device-SerialPort/Makefile
index 09ad4a05504..b8bf02bacd1 100644
--- a/comms/p5-Device-SerialPort/Makefile
+++ b/comms/p5-Device-SerialPort/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.1.1.1 2004/08/03 14:44:18 todd Exp $
+# $OpenBSD: Makefile,v 1.2 2005/11/29 02:43:23 pvalchev Exp $
 
 SHARED_ONLY=	Yes
 
@@ -24,4 +24,8 @@ USE_GMAKE=	Yes
 
 CONFIGURE_STYLE= perl
 
+.if ${MACHINE_ARCH} == "sparc"
+CONFIGURE_ARGS= TESTPORT=/dev/cuaa
+.endif
+
 .include <bsd.port.mk>