diff --git a/release-notes/8.0.0/3583.md b/release-notes/8.0.0/3583.md
new file mode 100644
index 0000000000..0f5fdc8f60
--- /dev/null
+++ b/release-notes/8.0.0/3583.md
@@ -0,0 +1 @@
+Settings: OAuth2 applications: Consistently check input on client side
diff --git a/templates/user/settings/applications_oauth2_list.tmpl b/templates/user/settings/applications_oauth2_list.tmpl
index c75cbd532e..74cdac49c0 100644
--- a/templates/user/settings/applications_oauth2_list.tmpl
+++ b/templates/user/settings/applications_oauth2_list.tmpl
@@ -59,7 +59,7 @@
 		</div>
 		<div class="field {{if .Err_RedirectURI}}error{{end}}">
 			<label for="redirect-uris">{{ctx.Locale.Tr "settings.oauth2_redirect_uris"}}</label>
-			<textarea name="redirect_uris" id="redirect-uris"></textarea>
+			<textarea name="redirect_uris" id="redirect-uris" required></textarea>
 		</div>
 		<div class="field {{if .Err_ConfidentialClient}}error{{end}}">
 			<div class="ui checkbox">