diff --git a/survival.R b/survival.R
index 233d688..882c360 100644
--- a/survival.R
+++ b/survival.R
@@ -78,6 +78,7 @@ sma_plot_surv_asct_dx <- function() {
 sma_plot_surv_sm <- function() {
 	ggsurvplot(survfit(Surv(event_time_sm, event_status) ~ 1, secmal),
 		   data = secmal, xscale = "d_y",
+		   surv.median.line = "hv",
 		   break.time.by = 365.25,
 		   legend = "none",
 		   xlab = "Years",