diff --git a/lib/libm/arch/vax/n_round.S b/lib/libm/arch/vax/n_round.S
index 99d95097175e..0e008428116e 100644
--- a/lib/libm/arch/vax/n_round.S
+++ b/lib/libm/arch/vax/n_round.S
@@ -38,4 +38,5 @@
 
 ENTRY(round, 0)
 	cvtrdl 4(%ap),%r0
+	cvtld %r0,%r0
 	ret