diff --git a/mach/pmds/cv/cv.c b/mach/pmds/cv/cv.c
index a9a0317e7..043f1d718 100644
--- a/mach/pmds/cv/cv.c
+++ b/mach/pmds/cv/cv.c
@@ -125,7 +125,7 @@ getaddr(p_addr) long *p_addr ; {
 	return 1 ;
 }
 
-getcnt(p_cnt) unsigned *p_cnt ; {
+getcnt(p_cnt) short *p_cnt ; {
 	char in[2] ;
 	short out[2] ;
 	int i ;