diff --git a/omics/week-5/workshop.qmd b/omics/week-5/workshop.qmd
index 81f8990..0055d20 100644
--- a/omics/week-5/workshop.qmd
+++ b/omics/week-5/workshop.qmd
@@ -936,9 +936,9 @@ vol <- prog_hspc_results |>
   geom_point() +
   geom_hline(yintercept = -log10(0.05), 
              linetype = "dashed") +
-  geom_vline(xintercept = 1, 
+  geom_vline(xintercept = 2, 
              linetype = "dashed") +
-  geom_vline(xintercept = -1, 
+  geom_vline(xintercept = -2, 
              linetype = "dashed") +
   scale_x_continuous(expand = c(0, 0)) +
   scale_y_continuous(expand = c(0, 0)) +