diff --git a/src/backend/distributed/executor/multi_router_executor.c b/src/backend/distributed/executor/multi_router_executor.c
index 9dbd053e0..3f052870b 100644
--- a/src/backend/distributed/executor/multi_router_executor.c
+++ b/src/backend/distributed/executor/multi_router_executor.c
@@ -80,7 +80,6 @@ bool AllModificationsCommutative = false;
  */
 static HTAB *xactParticipantHash = NULL;
 static List *xactShardConnSetList = NIL;
-static shmem_startup_hook_type prev_shmem_startup_hook = NULL;
 static bool subXactAbortAttempted = false;
 
 /* functions needed during start phase */
@@ -113,7 +112,6 @@ static void RecordShardIdParticipant(uint64 affectedShardId,
 									 NodeConnectionEntry *participantEntry);
 
 /* functions needed by callbacks and hooks */
-static void RegisterRouterExecutorXactCallbacks(void);
 static void RouterTransactionCallback(XactEvent event, void *arg);
 static void RouterSubtransactionCallback(SubXactEvent event, SubTransactionId subId,
 										 SubTransactionId parentSubid, void *arg);
@@ -1202,32 +1200,13 @@ RouterExecutorEnd(QueryDesc *queryDesc)
 
 
 /*
- * InstallRouterExecutorShmemHook simply installs a hook (intended to be called
- * once during backend startup), which will itself register all the transaction
- * callbacks needed by this executor.
+ * RegisterRouterExecutorXactCallbacks registers this executor's callbacks.
  */
 void
-InstallRouterExecutorShmemHook(void)
-{
-	prev_shmem_startup_hook = shmem_startup_hook;
-	shmem_startup_hook = RegisterRouterExecutorXactCallbacks;
-}
-
-
-/*
- * RegisterRouterExecutorXactCallbacks registers (sub-)transaction callbacks
- * needed by this executor before calling any previous shmem startup hooks.
- */
-static void
 RegisterRouterExecutorXactCallbacks(void)
 {
 	RegisterXactCallback(RouterTransactionCallback, NULL);
 	RegisterSubXactCallback(RouterSubtransactionCallback, NULL);
-
-	if (prev_shmem_startup_hook != NULL)
-	{
-		prev_shmem_startup_hook();
-	}
 }
 
 
diff --git a/src/backend/distributed/shared_library_init.c b/src/backend/distributed/shared_library_init.c
index b486b590e..c52437dbb 100644
--- a/src/backend/distributed/shared_library_init.c
+++ b/src/backend/distributed/shared_library_init.c
@@ -154,7 +154,7 @@ _PG_init(void)
 	WorkerNodeRegister();
 
 	/* initialize transaction callbacks */
-	InstallRouterExecutorShmemHook();
+	RegisterRouterExecutorXactCallbacks();
 	InstallMultiShardXactShmemHook();
 }
 
diff --git a/src/include/distributed/multi_router_executor.h b/src/include/distributed/multi_router_executor.h
index 51bb597f1..236222f5c 100644
--- a/src/include/distributed/multi_router_executor.h
+++ b/src/include/distributed/multi_router_executor.h
@@ -37,6 +37,6 @@ extern void RouterExecutorStart(QueryDesc *queryDesc, int eflags, Task *task);
 extern void RouterExecutorRun(QueryDesc *queryDesc, ScanDirection direction, long count);
 extern void RouterExecutorFinish(QueryDesc *queryDesc);
 extern void RouterExecutorEnd(QueryDesc *queryDesc);
-extern void InstallRouterExecutorShmemHook(void);
+extern void RegisterRouterExecutorXactCallbacks(void);
 
 #endif /* MULTI_ROUTER_EXECUTOR_H_ */