diff --git a/docs/samples/cert-var.md b/docs/samples/cert-var.md
index 39d60950d8..c417bc40ca 100644
--- a/docs/samples/cert-var.md
+++ b/docs/samples/cert-var.md
@@ -242,7 +242,7 @@ This should present an entry for "New value of variable", and a button to "Set a
 
 Enter a number and click the button.
 
-[Certified variables](./_attachments/cert-var.png)
+![Certified variables](./_attachments/cert-var.png)
 
 The canister updates its certificate, and the frontend checks it. The developer console contains some additional comments about each step.