diff --git a/etc/firefox/policies/policies.json b/etc/firefox/policies/policies.json
index b28cffea..a04c6ae9 100644
--- a/etc/firefox/policies/policies.json
+++ b/etc/firefox/policies/policies.json
@@ -630,6 +630,11 @@
 				"Type": "boolean",
 				"Value": true
 			},
+			"browser.uidensity": {
+				"Status": "default",
+				"Type": "number",
+				"Value": 1
+			},
 			"browser.urlbar.trimHttps": {
 				"Status": "locked",
 				"Type": "boolean",