diff --git a/assets/clone.html b/assets/clone.html
index 2c2f8c8..22215ce 100644
--- a/assets/clone.html
+++ b/assets/clone.html
@@ -451,10 +451,10 @@
 								</select>
 
 								<select id="expiry" name="expiry" class="form-control">
-									<option value="P5M">5 minutes</option>
-									<option value="P1H">1 hour</option>
+									<option value="PT5M">5 minutes</option>
+									<option value="PT1H">1 hour</option>
 									<option value="P1D">1 day</option>
-									<option value="P1W">1 week</option>
+									<option value="P7D">1 week</option>
 									<option value="P30D">1 month</option>
 									<option value="P1Y">1 year</option>
 									<option value="P20Y" selected>Forever</option>
diff --git a/assets/index.html b/assets/index.html
index 5bd36c1..d8fddd3 100644
--- a/assets/index.html
+++ b/assets/index.html
@@ -450,11 +450,11 @@
 								</select>
 
 								<select id="expiry" name="expiry" class="form-control">
-									<option value="P5M">5 minutes</option>
-									<option value="P1H">1 hour</option>
+									<option value="PT5M">5 minutes</option>
+									<option value="PT1H">1 hour</option>
 									<option value="P1D">1 day</option>
-									<option value="P1W">1 week</option>
-									<option value="P30d">1 month</option>
+									<option value="P7D">1 week</option>
+									<option value="P30D">1 month</option>
 									<option value="P1Y">1 year</option>
 									<option value="P20Y" selected>Forever</option>
 								</select>