diff --git a/application/basilisk/components/nsBrowserGlue.js b/application/basilisk/components/nsBrowserGlue.js
index 3693de4b1d..7446d1110a 100644
--- a/application/basilisk/components/nsBrowserGlue.js
+++ b/application/basilisk/components/nsBrowserGlue.js
@@ -1044,12 +1044,7 @@ BrowserGlue.prototype = {
       });
     }
 
-    let signingRequired;
-    if (AppConstants.MOZ_REQUIRE_SIGNING) {
-      signingRequired = true;
-    } else {
-      signingRequired = Services.prefs.getBoolPref("xpinstall.signatures.required");
-    }
+    let signingRequired = Services.prefs.getBoolPref("xpinstall.signatures.required");
 
     if (signingRequired) {
       let disabledAddons = AddonManager.getStartupChanges(AddonManager.STARTUP_CHANGE_DISABLED);
diff --git a/application/basilisk/confvars.sh b/application/basilisk/confvars.sh
index 18271711b8..6f980c3674 100644
--- a/application/basilisk/confvars.sh
+++ b/application/basilisk/confvars.sh
@@ -64,7 +64,3 @@ if test "$OS_ARCH" = "WINNT" -o \
         "$OS_ARCH" = "Darwin"; then
   MOZ_CAN_DRAW_IN_TITLEBAR=1
 fi
-
-# Disable checking that add-ons are signed by the trusted root
-MOZ_ADDON_SIGNING=0
-MOZ_REQUIRE_SIGNING=0