diff --git a/user-guide/thunderbird_for_o365.md b/user-guide/thunderbird_for_o365.md
index 0733989f..bbd4f11f 100644
--- a/user-guide/thunderbird_for_o365.md
+++ b/user-guide/thunderbird_for_o365.md
@@ -27,7 +27,7 @@ Then open the hamburger menu at the top left and select "Settings".
 
 There type `certificate` into the search box at the top left. Then press below the "Manage Certificates..." button.
 
-![Search for Certificate Settings](thunderbird_for_o365/thunderbird02b_certificate_dialog.png)
+![Certificate Manager Dialog](thunderbird_for_o365/thunderbird02b_certficate_dialog.png)
 
 Open the "Authorities" tab.