diff --git a/aptos-node/src/lib.rs b/aptos-node/src/lib.rs
index 3eadc3f0b2a26..abf6e340e6c4d 100644
--- a/aptos-node/src/lib.rs
+++ b/aptos-node/src/lib.rs
@@ -578,7 +578,7 @@ where
                     let config = OnChainJWKConsensusConfig::default_enabled();
                     println!("Flag `INITIALIZE_JWK_CONSENSUS` detected, will enable JWK Consensus for all default OIDC providers in genesis: {:?}", config);
                     Some(config)
-                },
+                }
                 _ => None,
             };
         })))
@@ -704,6 +704,7 @@ pub fn setup_environment_and_start_node(
         indexer_runtime,
         indexer_grpc_runtime,
         internal_indexer_db_runtime,
+        mempool_client_sender,
     ) = services::bootstrap_api_and_indexer(
         &node_config,
         db_rw.clone(),
@@ -714,6 +715,9 @@ pub fn setup_environment_and_start_node(
         indexer_grpc_port_tx,
     )?;
 
+    // Set mempool client sender in order to enable the Mempool API in the admin service
+    admin_service.set_mempool_client_sender(mempool_client_sender);
+
     // Create mempool and get the consensus to mempool sender
     let (mempool_runtime, consensus_to_mempool_sender) =
         services::start_mempool_runtime_and_get_consensus_sender(
diff --git a/aptos-node/src/services.rs b/aptos-node/src/services.rs
index dce92c0088e79..9537f4ea3ef9f 100644
--- a/aptos-node/src/services.rs
+++ b/aptos-node/src/services.rs
@@ -19,7 +19,9 @@ use aptos_indexer_grpc_table_info::runtime::{
     bootstrap as bootstrap_indexer_table_info, bootstrap_internal_indexer_db,
 };
 use aptos_logger::{debug, telemetry_log_writer::TelemetryLog, LoggerFilterUpdater};
-use aptos_mempool::{network::MempoolSyncMsg, MempoolClientRequest, QuorumStoreRequest};
+use aptos_mempool::{
+    network::MempoolSyncMsg, MempoolClientRequest, MempoolClientSender, QuorumStoreRequest,
+};
 use aptos_mempool_notifications::MempoolNotificationListener;
 use aptos_network::application::{interface::NetworkClientInterface, storage::PeersAndMetadata};
 use aptos_network_benchmark::{run_netbench_service, NetbenchMessage};
@@ -59,6 +61,7 @@ pub fn bootstrap_api_and_indexer(
     Option<Runtime>,
     Option<Runtime>,
     Option<Runtime>,
+    MempoolClientSender,
 )> {
     // Create the mempool client and sender
     let (mempool_client_sender, mempool_client_receiver) =
@@ -120,7 +123,7 @@ pub fn bootstrap_api_and_indexer(
         node_config,
         chain_id,
         db_rw.reader.clone(),
-        mempool_client_sender,
+        mempool_client_sender.clone(),
     )?;
 
     Ok((
@@ -130,6 +133,7 @@ pub fn bootstrap_api_and_indexer(
         indexer_runtime,
         indexer_grpc,
         db_indexer_runtime,
+        mempool_client_sender,
     ))
 }