diff --git a/mach/pdp/libem/dvu4.s b/mach/pdp/libem/dvu4.s
index cb40130b..84a07c4d 100644
--- a/mach/pdp/libem/dvu4.s
+++ b/mach/pdp/libem/dvu4.s
@@ -35,7 +35,7 @@ harddvu4:
 	mov	06(sp),r2
 	mov	04(sp),r1
 	mov	(sp),r3
-	mov	$17.,r4
+	mov	$17,r4
 	br	3f
 6:	rol	r2
 	rol	r1