diff --git a/packages/plugin-ext/src/common/plugin-api-rpc.ts b/packages/plugin-ext/src/common/plugin-api-rpc.ts
index 44de61a6f870f..c21fd3b5fdc44 100644
--- a/packages/plugin-ext/src/common/plugin-api-rpc.ts
+++ b/packages/plugin-ext/src/common/plugin-api-rpc.ts
@@ -1443,7 +1443,7 @@ export interface CommandProperties {
     };
 }
 
-export type TaskGroupKind = 'build' | 'test' | 'rebuild' | 'clean'
+export type TaskGroupKind = 'build' | 'test' | 'rebuild' | 'clean';
 export interface TaskDto {
     type: string;
     taskType?: 'shell' | 'process' | 'customExecution'; // the task execution type
diff --git a/packages/plugin-ext/src/plugin/type-converters.spec.ts b/packages/plugin-ext/src/plugin/type-converters.spec.ts
index f7ad3e364301f..314fc01a11c01 100644
--- a/packages/plugin-ext/src/plugin/type-converters.spec.ts
+++ b/packages/plugin-ext/src/plugin/type-converters.spec.ts
@@ -22,7 +22,6 @@ import * as model from '../common/plugin-api-rpc-model';
 import { MarkdownString } from './markdown-string';
 import { MarkdownString as MarkdownStringInterface } from '@theia/core/lib/common/markdown-rendering';
 import { TaskDto } from '../common/plugin-api-rpc';
-import { TaskGroup } from './types-impl';
 
 describe('Type converters:', () => {
 
@@ -185,7 +184,7 @@ describe('Type converters:', () => {
         const args = ['run', 'build'];
         const cwd = '/projects/theia';
         const additionalProperty = 'some property';
-        const group = TaskGroup.Build;
+        const group = new types.TaskGroup('build', 'Build');
 
         const shellTaskDto: TaskDto = {
             type: shellType,