diff --git a/thrimbletrimmer/edit.html b/thrimbletrimmer/edit.html
index 2d36c3a..fd03bb3 100644
--- a/thrimbletrimmer/edit.html
+++ b/thrimbletrimmer/edit.html
@@ -323,7 +323,7 @@
 										</div>
 										<div>
 											<label>
-												<input type="checkbox" id="video-info-thumbnail-lock-aspect-ratio" />
+												<input type="checkbox" checked id="video-info-thumbnail-lock-aspect-ratio" />
 												Lock
 											</label>
 										</div>