diff --git a/platform/mv3/firefox/patch-ruleset.js b/platform/mv3/firefox/patch-ruleset.js
new file mode 100644
index 000000000..a8bd25c1b
--- /dev/null
+++ b/platform/mv3/firefox/patch-ruleset.js
@@ -0,0 +1,30 @@
+/*******************************************************************************
+
+    uBlock Origin - a comprehensive, efficient content blocker
+    Copyright (C) 2025-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+export function patchRuleset(ruleset) {
+    const out = [];
+    for ( const rule of ruleset ) {
+        const condition = rule.condition;
+        if ( Array.isArray(condition.responseHeaders) ) { continue; }
+        out.push(rule);
+    }
+    return out;
+}