diff --git a/platform/nodejs/index.js b/platform/nodejs/index.js
index e7282f8f8..a1ec68ea6 100644
--- a/platform/nodejs/index.js
+++ b/platform/nodejs/index.js
@@ -95,7 +95,10 @@ function pslInit(raw) {
         return globals.publicSuffixList;
     }
 
-    raw = readFileSync(resolve(__dirname, './assets/thirdparties/publicsuffix.org/list/effective_tld_names.dat'), 'utf8')
+    raw = readFileSync(
+        resolve(__dirname, './assets/thirdparties/publicsuffix.org/list/effective_tld_names.dat'),
+        'utf8'
+    );
     if ( typeof raw !== 'string' || raw.trim() === '' ) {
         console.error('Unable to populate public suffix list');
         return;
@@ -147,7 +150,7 @@ async function useLists(lists, options = {}) {
     snfe.reset();
 
     if ( Array.isArray(lists) === false || lists.length === 0 ) {
-        return snfe;
+        return;
     }
 
     let compiler = null;
@@ -176,8 +179,6 @@ async function useLists(lists, options = {}) {
     // Commit changes
     snfe.freeze();
     snfe.optimize();
-
-    return snfe;
 }
 
 /******************************************************************************/
@@ -253,9 +254,10 @@ class StaticNetFilteringEngine {
         return instance;
     }
 
-    static release() {
-        useLists([]);
+    static async release() {
+        if ( snfeProxyInstance === null ) { return; }
         snfeProxyInstance = null;
+        await useLists([]);
     }
 }