diff --git a/lib/taskana-core/src/main/java/pro/taskana/task/internal/TaskServiceImpl.java b/lib/taskana-core/src/main/java/pro/taskana/task/internal/TaskServiceImpl.java
index 821316927..b3aed62fa 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/task/internal/TaskServiceImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/task/internal/TaskServiceImpl.java
@@ -1244,10 +1244,11 @@ public class TaskServiceImpl implements TaskService {
       throw new InvalidStateException(
           String.format("Task with Id %s has to be claimed before.", task.getId()));
     } else if (!taskanaEngine
-        .getEngine()
-        .getCurrentUserContext()
-        .getAccessIds()
-        .contains(task.getOwner())) {
+            .getEngine()
+            .getCurrentUserContext()
+            .getAccessIds()
+            .contains(task.getOwner())
+        && !taskanaEngine.getEngine().isUserInRole(TaskanaRole.ADMIN)) {
       throw new InvalidOwnerException(
           String.format(
               "Owner of task %s is %s, but current user is %s ",
diff --git a/lib/taskana-core/src/test/java/acceptance/task/CompleteTaskAccTest.java b/lib/taskana-core/src/test/java/acceptance/task/CompleteTaskAccTest.java
index b0903d7b6..780a9a0e3 100644
--- a/lib/taskana-core/src/test/java/acceptance/task/CompleteTaskAccTest.java
+++ b/lib/taskana-core/src/test/java/acceptance/task/CompleteTaskAccTest.java
@@ -45,6 +45,18 @@ class CompleteTaskAccTest extends AbstractAccTest {
     assertThat(completedTask.getModified()).isNotEqualTo(completedTask.getCreated());
   }
 
+  @WithAccessId(user = "admin")
+  @Test
+  void should_completeClaimedTaskByAnotherUser_When_UserIsAdmin() throws Exception {
+    assertThat(TASK_SERVICE.getTask("TKI:000000000000000000000000000000000029").getState())
+        .isEqualTo(TaskState.CLAIMED);
+    Task completedTask = TASK_SERVICE.completeTask("TKI:000000000000000000000000000000000029");
+    assertThat(completedTask).isNotNull();
+    assertThat(completedTask.getCompleted()).isNotNull();
+    assertThat(completedTask.getState()).isEqualTo(TaskState.COMPLETED);
+    assertThat(completedTask.getModified()).isNotEqualTo(completedTask.getCreated());
+  }
+
   @WithAccessId(user = "admin")
   @WithAccessId(user = "taskadmin")
   @TestTemplate