diff --git a/utils/doclint/generateDotnetApi.js b/utils/doclint/generateDotnetApi.js
index 567a0f62c3..04b8007a93 100644
--- a/utils/doclint/generateDotnetApi.js
+++ b/utils/doclint/generateDotnetApi.js
@@ -98,7 +98,7 @@ classNameMap.set('Readable', 'Stream');
  * @param {string} folder
  * @param {string} extendsName
  */
-function writeFile(kind, name, spec, body, folder, extendsName = null) {
+function writeFile(kind, name, spec, body, folder, extendsName = null, namespace = "Microsoft.Playwright") {
   const out = [];
   // console.log(`Generating ${name}`);
 
@@ -124,7 +124,7 @@ function writeFile(kind, name, spec, body, folder, extendsName = null) {
   out.push(...body);
   out.push('}');
 
-  let content = template.replace('[CONTENT]', out.join(EOL));
+  let content = template.replace('[NAMESPACE]', namespace).replace('[CONTENT]', out.join(EOL));
   fs.writeFileSync(path.join(folder, name + '.cs'), content);
 }
 
@@ -184,7 +184,8 @@ function renderBaseClass(clazz) {
       [],
       body,
       adaptersDir,
-      null);
+      null,
+      'Microsoft.Playwright.Core');
 }
 
 /**
diff --git a/utils/doclint/templates/interface.cs b/utils/doclint/templates/interface.cs
index e2b3da3c1f..3e2aff2e48 100644
--- a/utils/doclint/templates/interface.cs
+++ b/utils/doclint/templates/interface.cs
@@ -37,7 +37,7 @@ using System.Threading.Tasks;
 
 #nullable enable
 
-namespace Microsoft.Playwright
+namespace [NAMESPACE]
 {
 	[CONTENT]
 }
diff --git a/utils/generate_dotnet_channels.js b/utils/generate_dotnet_channels.js
index ee3f6bcf23..38782f50c0 100755
--- a/utils/generate_dotnet_channels.js
+++ b/utils/generate_dotnet_channels.js
@@ -150,6 +150,7 @@ for (const [name, item] of Object.entries(protocol)) {
     const initializerName = channelName + 'Initializer';
     const superName = inherits.get(name);
     channels_ts.push('using System.Collections.Generic;');
+    channels_ts.push('using Microsoft.Playwright.Core;');
     channels_ts.push(``);
     channels_ts.push(`namespace Microsoft.Playwright.Transport.Protocol`);
     channels_ts.push(`{`);