diff --git a/src/backend/distributed/commands/cluster.c b/src/backend/distributed/commands/cluster.c
index d1dd313fe..f5dfc778f 100644
--- a/src/backend/distributed/commands/cluster.c
+++ b/src/backend/distributed/commands/cluster.c
@@ -14,9 +14,18 @@
 #include "distributed/commands.h"
 #include "distributed/metadata_cache.h"
 
+static List * PreprocessClusterStmt(Node *node, const char *clusterCommand);
+static DistributeObjectOps Any_Cluster = {
+	.deparse = NULL,
+	.qualify = NULL,
+	.preprocess = PreprocessClusterStmt,
+	.postprocess = NULL,
+	.address = NULL,
+};
+REGISTER_DISTRIBUTED_OPERATION(ClusterStmt, Any_Cluster);
 
 /* placeholder for PreprocessClusterStmt */
-List *
+static List *
 PreprocessClusterStmt(Node *node, const char *clusterCommand)
 {
 	ClusterStmt *clusterStmt = castNode(ClusterStmt, node);
diff --git a/src/backend/distributed/commands/distribute_object_ops.c b/src/backend/distributed/commands/distribute_object_ops.c
index ddfb05841..10966ecbb 100644
--- a/src/backend/distributed/commands/distribute_object_ops.c
+++ b/src/backend/distributed/commands/distribute_object_ops.c
@@ -23,15 +23,6 @@ static DistributeObjectOps NoDistributeOps = {
 	.address = NULL,
 };
 
-static DistributeObjectOps Any_Cluster = {
-	.deparse = NULL,
-	.qualify = NULL,
-	.preprocess = PreprocessClusterStmt,
-	.postprocess = NULL,
-	.address = NULL,
-};
-REGISTER_DISTRIBUTED_OPERATION(ClusterStmt, Any_Cluster);
-
 static DistributeObjectOps Any_Index = {
 	.deparse = NULL,
 	.qualify = NULL,
diff --git a/src/include/distributed/commands.h b/src/include/distributed/commands.h
index ab1960541..6f2a8e471 100644
--- a/src/include/distributed/commands.h
+++ b/src/include/distributed/commands.h
@@ -121,9 +121,6 @@ typedef struct DistributedObjectOpsContainer
 
 const DistributeObjectOps * GetDistributeObjectOps(Node *node);
 
-/* cluster.c - forward declarations */
-extern List * PreprocessClusterStmt(Node *node, const char *clusterCommand);
-
 
 /* call.c */
 extern bool CallDistributedProcedureRemotely(CallStmt *callStmt, DestReceiver *dest);