diff --git a/sys/amd64/isa/clock.c b/sys/amd64/isa/clock.c
index 5b1de5bc9f7f..2d2391e4d0a8 100644
--- a/sys/amd64/isa/clock.c
+++ b/sys/amd64/isa/clock.c
@@ -170,7 +170,7 @@ clkintr(struct trapframe *frame)
 		hardclockintr(frame);
 	} else {
 		if (--pscnt == 0) {
-			pscnt = psrate;
+			pscnt = psratio;
 #ifdef SMP
 			if (smp_started)
 				ipi_all_but_self(IPI_STATCLOCK);