diff --git a/packages/adblocker/src/engine/domains.ts b/packages/adblocker/src/engine/domains.ts
index 55962ce300..c6777482fe 100644
--- a/packages/adblocker/src/engine/domains.ts
+++ b/packages/adblocker/src/engine/domains.ts
@@ -12,11 +12,25 @@ import { StaticDataView, sizeOfUint32Array, sizeOfUTF8 } from '../data-view.js';
 import { binLookup, hasUnicode, HASH_INTERNAL_MULT } from '../utils.js';
 
 export class Domains {
-  public static parse(parts: string[], debug: boolean = false): Domains | undefined {
+  public static parse(
+    parts: string[],
+    {
+      isNetworkEntities = false,
+      debug = false,
+    }: { isNetworkEntities?: boolean | undefined; debug?: boolean | undefined } = {},
+  ): Domains | undefined {
     if (parts.length === 0) {
       return undefined;
     }
 
+    if (isNetworkEntities === true) {
+      for (const part of parts) {
+        if (part.length === 0 || part.startsWith('|') || part.endsWith('|')) {
+          return undefined;
+        }
+      }
+    }
+
     const entities: number[] = [];
     const notEntities: number[] = [];
     const hostnames: number[] = [];
@@ -59,7 +73,7 @@ export class Domains {
       hostnames: hostnames.length !== 0 ? new Uint32Array(hostnames).sort() : undefined,
       notEntities: notEntities.length !== 0 ? new Uint32Array(notEntities).sort() : undefined,
       notHostnames: notHostnames.length !== 0 ? new Uint32Array(notHostnames).sort() : undefined,
-      parts: debug === true ? parts.join(',') : undefined,
+      parts: debug === true ? parts.join(isNetworkEntities ? '|' : ',') : undefined,
     });
   }
 
diff --git a/packages/adblocker/src/filters/cosmetic.ts b/packages/adblocker/src/filters/cosmetic.ts
index df7348c587..bf7220e78b 100644
--- a/packages/adblocker/src/filters/cosmetic.ts
+++ b/packages/adblocker/src/filters/cosmetic.ts
@@ -263,7 +263,7 @@ export default class CosmeticFilter implements IFilter {
     // number of labels considered. This allows a compact representation of
     // hostnames and fast matching without any string copy.
     if (sharpIndex > 0) {
-      domains = Domains.parse(line.slice(0, sharpIndex).split(','), debug);
+      domains = Domains.parse(line.slice(0, sharpIndex).split(','), { debug });
     }
 
     if (line.endsWith(':remove()')) {
diff --git a/packages/adblocker/src/filters/network.ts b/packages/adblocker/src/filters/network.ts
index 16e487f5b3..3b99d70b11 100644
--- a/packages/adblocker/src/filters/network.ts
+++ b/packages/adblocker/src/filters/network.ts
@@ -732,20 +732,12 @@ export default class NetworkFilter implements IFilter {
 
         switch (option) {
           case 'denyallow': {
-            denyallow = Domains.parse(value.split('|'), debug);
+            denyallow = Domains.parse(value.split('|'), { isNetworkEntities: true, debug });
             break;
           }
           case 'domain':
           case 'from': {
-            // domain list starting or ending with '|' is invalid
-            if (
-              value.charCodeAt(0) === 124 /* '|' */ ||
-              value.charCodeAt(value.length - 1) === 124 /* '|' */
-            ) {
-              return null;
-            }
-
-            domains = Domains.parse(value.split('|'), debug);
+            domains = Domains.parse(value.split('|'), { isNetworkEntities: true, debug });
             break;
           }
           case 'badfilter':
diff --git a/packages/adblocker/test/parsing.test.ts b/packages/adblocker/test/parsing.test.ts
index 1b9da5b8b5..fbcfcb999f 100644
--- a/packages/adblocker/test/parsing.test.ts
+++ b/packages/adblocker/test/parsing.test.ts
@@ -180,6 +180,9 @@ describe('Network filters', () => {
 
     it('pprint domain', () => {
       checkToString('ads$domain=foo.com|bar.co.uk|~baz.io', 'ads$domain=<hashed>');
+      checkToString('ads$domain=foo.com|bar.com', 'ads$domain=foo.com|bar.com', true);
+      checkToString('ads$denyallow=foo.com|bar.co.uk|~baz.io', 'ads$denyallow=<hashed>');
+      checkToString('ads$denyallow=foo.com|bar.com', 'ads$denyallow=foo.com|bar.com', true);
     });
 
     it('pprint with debug=true', () => {