diff --git a/webui.dev/index.html b/webui.dev/index.html
index 8946905..53b68a4 100644
--- a/webui.dev/index.html
+++ b/webui.dev/index.html
@@ -87,7 +87,7 @@
 					<span id = "execution-dialog-title">?</span>
 				</h2>
 
-				<button id = "execution-dialog-toggle-size">&#128470;</button>
+				<button id = "execution-dialog-toggle-size" title = "Toggle dialog size">&#128470;</button>
 			</div>
 			<div id = "execution-dialog-basics">
 					<strong>Started: </strong><span id = "execution-dialog-datetime-started">unknown</span>
@@ -122,7 +122,7 @@
 
 			<form method = "dialog">
 				<div class = "buttons">
-					<button name = "Cancel">Close</button>
+					<button name = "Cancel" title = "Close">Close</button>
 				</div>
 			</form>
 		</dialog>
@@ -140,7 +140,7 @@
 
 						<div class = "buttons">
 							<input name = "start" type = "submit" value = "Start">
-							<button name = "cancel">Cancel</button>
+							<button name = "cancel" title = "Cancel">Cancel</button>
 						</div>
 					</div>
 				</form>