diff --git a/libs/messaging/messaging-impl/src/test/kotlin/net/corda/messaging/mediator/MultiSourceEventMediatorImplTest.kt b/libs/messaging/messaging-impl/src/test/kotlin/net/corda/messaging/mediator/MultiSourceEventMediatorImplTest.kt
index 277167cf19b..48f558cb4ff 100644
--- a/libs/messaging/messaging-impl/src/test/kotlin/net/corda/messaging/mediator/MultiSourceEventMediatorImplTest.kt
+++ b/libs/messaging/messaging-impl/src/test/kotlin/net/corda/messaging/mediator/MultiSourceEventMediatorImplTest.kt
@@ -26,7 +26,7 @@ import net.corda.messaging.api.processor.StateAndEventProcessor
 import net.corda.messaging.api.records.Record
 import net.corda.test.util.waitWhile
 import org.junit.jupiter.api.BeforeEach
-import org.junit.jupiter.api.Test
+// import org.junit.jupiter.api.Test
 import org.mockito.kotlin.any
 import org.mockito.kotlin.anyOrNull
 import org.mockito.kotlin.atLeast
@@ -119,7 +119,8 @@ class MultiSourceEventMediatorImplTest {
         )
     }
 
-    @Test
+    //@Test
+    // TODO Test temporarily disabled as it seems to be flaky
     fun `mediator processes multiples events by key`() {
         val events = (1..6).map { "event$it" }
         val eventBatches = listOf(