diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c b/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c
index 1e065eae085c..f1e4c18a3a75 100644
--- a/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c
+++ b/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c
@@ -60,6 +60,7 @@ vcmn_err(int ce, const char *fmt, va_list adx)
 	if (ce != CE_IGNORE) {
 		printf("%s", prefix);
 		vprintf(fmt, adx);
+		printf("\n");
 	}
 }