diff --git a/node/src/test/kotlin/net/corda/node/services/statemachine/FlowFrameworkTests.kt b/node/src/test/kotlin/net/corda/node/services/statemachine/FlowFrameworkTests.kt
index 409e746c90..b49e5b5239 100644
--- a/node/src/test/kotlin/net/corda/node/services/statemachine/FlowFrameworkTests.kt
+++ b/node/src/test/kotlin/net/corda/node/services/statemachine/FlowFrameworkTests.kt
@@ -147,6 +147,8 @@ class FlowFrameworkTests {
 
         SuspendingFlow.hookBeforeCheckpoint = {}
         SuspendingFlow.hookAfterCheckpoint = {}
+        StaffedFlowHospital.onFlowResuscitated.clear()
+        StaffedFlowHospital.onFlowKeptForOvernightObservation.clear()
     }
 
     @Test(timeout=300_000)