diff --git a/installing-python.html b/installing-python.html
index 3a164cc..3e60e34 100644
--- a/installing-python.html
+++ b/installing-python.html
@@ -28,7 +28,7 @@ body{counter-reset:h1 0}
 <p><img src=i/win-install-1-all-users-or-just-me.png>
 <p><img src=i/win-install-2-destination-directory.png>
 <p><img src=i/win-install-3-customize.png>
-<p><img src=i/win-install-3a-desk-usage.png>
+<p><img src=i/win-install-3a-disk-usage.png>
 <p><img src=i/win-install-3b-test-suite.png>
 <p><img src=i/win-install-4-copying.png>
 <p><img src=i/win-install-5-finish.png>