diff --git a/extensions/eclipse-che-theia-plugin-ext/src/browser/che-workspace-main.ts b/extensions/eclipse-che-theia-plugin-ext/src/browser/che-workspace-main.ts
index 5089fa609..46ddd8ed6 100644
--- a/extensions/eclipse-che-theia-plugin-ext/src/browser/che-workspace-main.ts
+++ b/extensions/eclipse-che-theia-plugin-ext/src/browser/che-workspace-main.ts
@@ -41,6 +41,10 @@ export class CheWorkspaceMainImpl implements CheWorkspaceMain {
     );
   }
 
+  $getCurrentNamespace(): Promise<string> {
+    return this.workspaceService.getCurrentNamespace();
+  }
+
   async $getById(workspaceId: string): Promise<cheApi.workspace.Workspace> {
     return this.workspaceService.getWorkspaceById(workspaceId).then(
       workspace => workspace,
diff --git a/extensions/eclipse-che-theia-plugin-ext/src/common/che-protocol.ts b/extensions/eclipse-che-theia-plugin-ext/src/common/che-protocol.ts
index a488134bd..4ccbb6cfb 100644
--- a/extensions/eclipse-che-theia-plugin-ext/src/common/che-protocol.ts
+++ b/extensions/eclipse-che-theia-plugin-ext/src/common/che-protocol.ts
@@ -35,6 +35,7 @@ export interface CheWorkspace {
 
 export interface CheWorkspaceMain {
   $getCurrentWorkspace(): Promise<cheApi.workspace.Workspace>;
+  $getCurrentNamespace(): Promise<string>;
   // getAll(): Promise<Workspace[]>;
   // getAllByNamespace(namespace: string): Promise<Workspace[]>;
   $getById(workspaceId: string): Promise<cheApi.workspace.Workspace>;
diff --git a/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-api.ts b/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-api.ts
index 1eb2598e4..a38caa9a8 100644
--- a/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-api.ts
+++ b/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-api.ts
@@ -66,6 +66,9 @@ export function createAPIFactory(rpc: RPCProtocol): CheApiFactory {
       getCurrentWorkspace(): Promise<cheApi.workspace.Workspace> {
         return cheWorkspaceImpl.getCurrentWorkspace();
       },
+      getCurrentNamespace(): Promise<string> {
+        return cheWorkspaceImpl.getCurrentNamespace();
+      },
       getAll(): Promise<cheApi.workspace.Workspace[]> {
         return cheWorkspaceImpl.getAll();
       },
diff --git a/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-workspace.ts b/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-workspace.ts
index 3ef3d68fa..1112ee80d 100644
--- a/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-workspace.ts
+++ b/extensions/eclipse-che-theia-plugin-ext/src/plugin/che-workspace.ts
@@ -64,6 +64,10 @@ export class CheWorkspaceImpl implements CheWorkspace {
     throw new Error('Method not implemented.');
   }
 
+  getCurrentNamespace(): Promise<string> {
+    return this.workspaceMain.$getCurrentNamespace();
+  }
+
   getAll(): Promise<cheApi.workspace.Workspace[]> {
     throw new Error('Method not implemented.');
   }
diff --git a/extensions/eclipse-che-theia-plugin/src/che-proposed.d.ts b/extensions/eclipse-che-theia-plugin/src/che-proposed.d.ts
index 69e63ab1e..2ea248f11 100644
--- a/extensions/eclipse-che-theia-plugin/src/che-proposed.d.ts
+++ b/extensions/eclipse-che-theia-plugin/src/che-proposed.d.ts
@@ -29,6 +29,7 @@ declare module '@eclipse-che/plugin' {
 
     export namespace workspace {
         export function getCurrentWorkspace(): Promise<cheApi.workspace.Workspace>;
+        export function getCurrentNamespace(): Promise<string>;
         export function getAll(): Promise<cheApi.workspace.Workspace[]>;
         export function getAllByNamespace(namespace: string): Promise<cheApi.workspace.Workspace[]>;
         export function getById(workspaceId: string): Promise<cheApi.workspace.Workspace>;
diff --git a/extensions/eclipse-che-theia-remote-api/src/common/workspace-service.ts b/extensions/eclipse-che-theia-remote-api/src/common/workspace-service.ts
index 1194d2f4f..ab33bc936 100644
--- a/extensions/eclipse-che-theia-remote-api/src/common/workspace-service.ts
+++ b/extensions/eclipse-che-theia-remote-api/src/common/workspace-service.ts
@@ -55,6 +55,7 @@ export interface WorkspaceSettings {
 
 export const WorkspaceService = Symbol('WorkspaceService');
 export interface WorkspaceService {
+  getCurrentNamespace(): Promise<string>;
   getCurrentWorkspaceId(): Promise<string>;
   currentWorkspace(): Promise<Workspace>;
   getWorkspaceById(workspaceId: string): Promise<Workspace>;
diff --git a/extensions/eclipse-che-theia-remote-impl-che-server/src/node/che-server-workspace-service-impl.ts b/extensions/eclipse-che-theia-remote-impl-che-server/src/node/che-server-workspace-service-impl.ts
index 51e2108c7..97bbcc98c 100644
--- a/extensions/eclipse-che-theia-remote-impl-che-server/src/node/che-server-workspace-service-impl.ts
+++ b/extensions/eclipse-che-theia-remote-impl-che-server/src/node/che-server-workspace-service-impl.ts
@@ -23,6 +23,8 @@ export class CheServerWorkspaceServiceImpl implements WorkspaceService {
   @inject(CheServerRemoteApiImpl)
   private cheServerRemoteApiImpl: CheServerRemoteApiImpl;
 
+  private INFRASTRUCTURE_NAMESPACE = 'infrastructureNamespace';
+
   /**
    * Workspace client based variables.
    *
@@ -52,6 +54,11 @@ export class CheServerWorkspaceServiceImpl implements WorkspaceService {
     return this.workspaceId;
   }
 
+  public async getCurrentNamespace(): Promise<string> {
+    const workspace = await this.currentWorkspace();
+    return workspace.attributes?.[this.INFRASTRUCTURE_NAMESPACE] || workspace.namespace || '';
+  }
+
   public async currentWorkspace(): Promise<Workspace> {
     return this.cheServerRemoteApiImpl.getAPI().getById<Workspace>(this.workspaceId);
   }
diff --git a/plugins/resource-monitor-plugin/__mocks__/@eclipse-che/plugin.ts b/plugins/resource-monitor-plugin/__mocks__/@eclipse-che/plugin.ts
index 44521d620..9dfa9beb4 100644
--- a/plugins/resource-monitor-plugin/__mocks__/@eclipse-che/plugin.ts
+++ b/plugins/resource-monitor-plugin/__mocks__/@eclipse-che/plugin.ts
@@ -16,7 +16,6 @@
  * @author Valerii Svydenko
  */
 const che: any = {};
-che.devfile = {};
-che.devfile.metadata = {};
+che.workspace = {};
 che.k8s = {};
 module.exports = che;
diff --git a/plugins/resource-monitor-plugin/src/plugin.ts b/plugins/resource-monitor-plugin/src/plugin.ts
index 09bc3091b..b13ba53c2 100644
--- a/plugins/resource-monitor-plugin/src/plugin.ts
+++ b/plugins/resource-monitor-plugin/src/plugin.ts
@@ -27,7 +27,5 @@ export async function start(context: theia.PluginContext): Promise<void> {
 }
 
 export async function getNamespace(): Promise<string> {
-  // get namespace from devfile service
-  const devfile = await che.devfile.get();
-  return devfile.metadata?.attributes ? devfile.metadata.attributes.infrastructureNamespace : '';
+  return await che.workspace.getCurrentNamespace();
 }
diff --git a/plugins/resource-monitor-plugin/tests/plugin.spec.ts b/plugins/resource-monitor-plugin/tests/plugin.spec.ts
index 834de87e1..0534b8c21 100644
--- a/plugins/resource-monitor-plugin/tests/plugin.spec.ts
+++ b/plugins/resource-monitor-plugin/tests/plugin.spec.ts
@@ -69,20 +69,14 @@ const context: theia.PluginContext = {
 
 describe('Test Plugin', () => {
   jest.mock('../src/inversify-binding');
-  const devfileMock = jest.fn();
+  const getCurrentNamespace = jest.fn();
   let oldBindings: any;
   let initBindings: jest.Mock;
 
   beforeEach(() => {
     // Prepare Namespace
-    che.devfile.get = devfileMock;
-    const attributes = { infrastructureNamespace: 'che-namespace' };
-    const devfile = {
-      metadata: {
-        attributes,
-      },
-    };
-    devfileMock.mockReturnValue(devfile);
+    che.workspace.getCurrentNamespace = getCurrentNamespace;
+    getCurrentNamespace.mockReturnValue('che-namespace');
     oldBindings = InversifyBinding.prototype.initBindings;
     initBindings = jest.fn();
     InversifyBinding.prototype.initBindings = initBindings;
@@ -107,13 +101,5 @@ describe('Test Plugin', () => {
       const namespace = await plugin.getNamespace();
       expect(namespace).toBe('che-namespace');
     });
-    test('read che namespace from workspace service if no infrastructureNamespace attribute in devile metadata', async () => {
-      const devfile = {
-        metadata: {},
-      };
-      devfileMock.mockReturnValue(devfile);
-      const namespace = await plugin.getNamespace();
-      expect(namespace).toBe('');
-    });
   });
 });