diff --git a/platform/mv3/make-rulesets.js b/platform/mv3/make-rulesets.js
index 3b4c4fad9..2abb1eea7 100644
--- a/platform/mv3/make-rulesets.js
+++ b/platform/mv3/make-rulesets.js
@@ -32,6 +32,7 @@ import redirectResourcesMap from './js/redirect-resources.js';
 import { dnrRulesetFromRawLists } from './js/static-dnr-filtering.js';
 import * as sfp from './js/static-filtering-parser.js';
 import * as makeScriptlet from './make-scriptlets.js';
+import { safeReplace } from './safe-replace.js';
 
 /******************************************************************************/
 
@@ -400,14 +401,14 @@ async function processGenericCosmeticFilters(assetDetails, bucketsMap, exclusion
     const selectorLists = bucketsList.map(v => [ v[0], v[1].join(',') ]);
     const originalScriptletMap = await loadAllSourceScriptlets();
 
-    const patchedScriptlet = originalScriptletMap.get('css-generic')
-        .replace(
-            '$rulesetId$',
-            assetDetails.id
-        ).replace(
-            /\bself\.\$genericSelectorMap\$/m,
-            `${JSON.stringify(selectorLists, scriptletJsonReplacer)}`
-        );
+    let patchedScriptlet = originalScriptletMap.get('css-generic').replace(
+        '$rulesetId$',
+        assetDetails.id
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$genericSelectorMap\$/,
+        `${JSON.stringify(selectorLists, scriptletJsonReplacer)}`
+    );
 
     writeFile(
         `${scriptletDir}/generic/${assetDetails.id}.js`,
@@ -593,23 +594,26 @@ async function processCosmeticFilters(assetDetails, mapin) {
     }
 
     const originalScriptletMap = await loadAllSourceScriptlets();
-    const patchedScriptlet = originalScriptletMap.get('css-specific')
-        .replace(
-            '$rulesetId$',
-            assetDetails.id
-        ).replace(
-            /\bself\.\$argsList\$/m,
-            `${JSON.stringify(argsList, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$hostnamesMap\$/m,
-            `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$entitiesMap\$/m,
-            `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$exceptionsMap\$/m,
-            `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
-        );
+    let patchedScriptlet = originalScriptletMap.get('css-specific').replace(
+        '$rulesetId$',
+        assetDetails.id
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$argsList\$/,
+        `${JSON.stringify(argsList, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$hostnamesMap\$/,
+        `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$entitiesMap\$/,
+        `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$exceptionsMap\$/,
+        `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
+    );
     writeFile(`${scriptletDir}/specific/${assetDetails.id}.js`, patchedScriptlet);
     generatedFiles.push(`${assetDetails.id}`);
 
@@ -677,23 +681,26 @@ async function processDeclarativeCosmeticFilters(assetDetails, mapin) {
     }
 
     const originalScriptletMap = await loadAllSourceScriptlets();
-    const patchedScriptlet = originalScriptletMap.get('css-declarative')
-        .replace(
-            '$rulesetId$',
-            assetDetails.id
-        ).replace(
-            /\bself\.\$argsList\$/m,
-            `${JSON.stringify(argsList, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$hostnamesMap\$/m,
-            `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$entitiesMap\$/m,
-            `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$exceptionsMap\$/m,
-            `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
-        );
+    let patchedScriptlet = originalScriptletMap.get('css-declarative').replace(
+        '$rulesetId$',
+        assetDetails.id
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$argsList\$/,
+        `${JSON.stringify(argsList, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$hostnamesMap\$/,
+        `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$entitiesMap\$/,
+        `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$exceptionsMap\$/,
+        `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
+    );
     writeFile(`${scriptletDir}/declarative/${assetDetails.id}.js`, patchedScriptlet);
 
     if ( contentArray.length !== 0 ) {
@@ -760,23 +767,26 @@ async function processProceduralCosmeticFilters(assetDetails, mapin) {
     }
 
     const originalScriptletMap = await loadAllSourceScriptlets();
-    const patchedScriptlet = originalScriptletMap.get('css-procedural')
-        .replace(
-            '$rulesetId$',
-            assetDetails.id
-        ).replace(
-            /\bself\.\$argsList\$/m,
-            `${JSON.stringify(argsList, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$hostnamesMap\$/m,
-            `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$entitiesMap\$/m,
-            `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
-        ).replace(
-            /\bself\.\$exceptionsMap\$/m,
-            `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
-        );
+    let patchedScriptlet = originalScriptletMap.get('css-procedural').replace(
+        '$rulesetId$',
+        assetDetails.id
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$argsList\$/,
+        `${JSON.stringify(argsList, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$hostnamesMap\$/,
+        `${JSON.stringify(hostnamesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$entitiesMap\$/,
+        `${JSON.stringify(entitiesMap, scriptletJsonReplacer)}`
+    );
+    patchedScriptlet = safeReplace(patchedScriptlet,
+        /\bself\.\$exceptionsMap\$/,
+        `${JSON.stringify(exceptionsMap, scriptletJsonReplacer)}`
+    );
     writeFile(`${scriptletDir}/procedural/${assetDetails.id}.js`, patchedScriptlet);
 
     if ( contentArray.length !== 0 ) {
diff --git a/platform/mv3/make-scriptlets.js b/platform/mv3/make-scriptlets.js
index 53a4435c6..7dfeb89b6 100644
--- a/platform/mv3/make-scriptlets.js
+++ b/platform/mv3/make-scriptlets.js
@@ -25,6 +25,7 @@
 
 import fs from 'fs/promises';
 import { builtinScriptlets } from './scriptlets.js';
+import { safeReplace } from './safe-replace.js';
 
 /******************************************************************************/
 
@@ -52,25 +53,6 @@ function createScriptletCoreCode(scriptletToken) {
 
 /******************************************************************************/
 
-function safeReplace(text, pattern, replacement, count = 1) {
-    const rePattern = typeof pattern === 'string'
-        ? new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
-        : pattern;
-    let out = text;
-    for (;;) {
-        const match = rePattern.exec(out);
-        if ( match === null ) { break; }
-        out = out.slice(0, match.index) +
-        replacement +
-        out.slice(match.index + match[0].length);
-        count -= 1;
-        if ( count === 0 ) { break; }
-    }
-    return out;
-}
-
-/******************************************************************************/
-
 export function init() {
     for ( const scriptlet of builtinScriptlets ) {
         const { name, aliases, fn } = scriptlet;
diff --git a/platform/mv3/safe-replace.js b/platform/mv3/safe-replace.js
new file mode 100644
index 000000000..5adb9ffd2
--- /dev/null
+++ b/platform/mv3/safe-replace.js
@@ -0,0 +1,41 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2017-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
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+export function safeReplace(text, pattern, replacement, count = 1) {
+    const rePattern = typeof pattern === 'string'
+        ? new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
+        : pattern;
+    let out = text;
+    for (;;) {
+        const match = rePattern.exec(out);
+        if ( match === null ) { break; }
+        out = out.slice(0, match.index) +
+        replacement +
+        out.slice(match.index + match[0].length);
+        count -= 1;
+        if ( count === 0 ) { break; }
+    }
+    return out;
+}