diff --git a/engine/flink/management/src/main/scala/pl/touk/nussknacker/engine/management/FlinkRestManager.scala b/engine/flink/management/src/main/scala/pl/touk/nussknacker/engine/management/FlinkRestManager.scala
index 63e6b1a66ee..fb88b72e745 100644
--- a/engine/flink/management/src/main/scala/pl/touk/nussknacker/engine/management/FlinkRestManager.scala
+++ b/engine/flink/management/src/main/scala/pl/touk/nussknacker/engine/management/FlinkRestManager.scala
@@ -117,10 +117,8 @@ class FlinkRestManager(config: FlinkConfig, modelData: ModelData, mainClassName:
       logger.warn(s"Trying to cancel ${processName.value} which is not present in Flink")
       Future.successful(())
     },
-    whenDuplicates = { _ =>
-      //TODO cancel all these jobs
-      logger.warn(s"Trying to cancel ${processName.value} which maps to multiple jobs running in Flink")
-      Future.successful(())
+    whenDuplicates = { overviews =>
+      Future.sequence(overviews.filter(isNotFinished).map(o => ExternalDeploymentId(o.jid)).map(cancel)).map(_ => ())
     },
     whenSingle = overview => {
       val status = mapJobStatus(overview)
diff --git a/engine/flink/management/src/test/scala/pl/touk/nussknacker/engine/management/FlinkRestManagerSpec.scala b/engine/flink/management/src/test/scala/pl/touk/nussknacker/engine/management/FlinkRestManagerSpec.scala
index 82c767c7144..8943b2a8919 100644
--- a/engine/flink/management/src/test/scala/pl/touk/nussknacker/engine/management/FlinkRestManagerSpec.scala
+++ b/engine/flink/management/src/test/scala/pl/touk/nussknacker/engine/management/FlinkRestManagerSpec.scala
@@ -198,6 +198,23 @@ class FlinkRestManagerSpec extends FunSuite with Matchers with PatientScalaFutur
     statuses.map(_.jid).foreach(id => history should contain(HistoryEntry("cancel", Some(id))))
   }
 
+  test("cancel duplicate processes which are in non terminal state") {
+    val jobStatuses = List(
+      JobStatus.RUNNING.name(),
+      JobStatus.RUNNING.name(),
+      JobStatus.FAILED.name()
+    )
+    statuses = jobStatuses.map(status => JobOverview(UUID.randomUUID().toString, "test", 10L, 10L, status))
+
+    val (manager, history)  = createManagerWithHistory(statuses)
+
+    manager.cancel(ProcessName("test"), User("test_id", "Jack")).futureValue shouldBe (())
+
+    history.filter(_.operation == "cancel").map(_.jobId.get) should contain theSameElementsAs
+      statuses.filter(_.state == JobStatus.RUNNING.name()).map(_.jid)
+  }
+
+
   test("allow cancel but do not sent cancel request if process is failed") {
     statuses = List(JobOverview("2343", "p1", 10L, 10L, JobStatus.FAILED.name()))
     val (manager, history) = createManagerWithHistory(statuses, acceptCancel = false)