diff --git a/src/guc.c b/src/guc.c
index 02ecde7e2cb..7af4cf61be0 100644
--- a/src/guc.c
+++ b/src/guc.c
@@ -68,7 +68,6 @@ TSDLLEXPORT int ts_guc_max_tuples_decompressed_per_dml = 100000;
 TSDLLEXPORT bool ts_guc_enable_transparent_decompression = true;
 TSDLLEXPORT bool ts_guc_enable_decompression_logrep_markers = false;
 TSDLLEXPORT bool ts_guc_enable_decompression_sorted_merge = true;
-bool ts_guc_enable_async_append = true;
 bool ts_guc_enable_chunkwise_aggregation = true;
 bool ts_guc_enable_vectorized_aggregation = true;
 TSDLLEXPORT bool ts_guc_enable_compression_indexscan = false;
@@ -449,18 +448,6 @@ _guc_init(void)
 							 NULL,
 							 NULL);
 
-	DefineCustomBoolVariable(MAKE_EXTOPTION("enable_async_append"),
-							 "Enable async query execution on data nodes",
-							 "Enable optimization that runs remote queries asynchronously"
-							 "across data nodes",
-							 &ts_guc_enable_async_append,
-							 true,
-							 PGC_USERSET,
-							 0,
-							 NULL,
-							 NULL,
-							 NULL);
-
 	DefineCustomBoolVariable(MAKE_EXTOPTION("enable_chunkwise_aggregation"),
 							 "Enable chunk-wise aggregation",
 							 "Enable the pushdown of aggregations to the"
diff --git a/src/guc.h b/src/guc.h
index c50c333de8d..44c859e3122 100644
--- a/src/guc.h
+++ b/src/guc.h
@@ -32,7 +32,6 @@ extern TSDLLEXPORT int ts_guc_max_tuples_decompressed_per_dml;
 extern TSDLLEXPORT bool ts_guc_enable_transparent_decompression;
 extern TSDLLEXPORT bool ts_guc_enable_decompression_logrep_markers;
 extern TSDLLEXPORT bool ts_guc_enable_decompression_sorted_merge;
-extern TSDLLEXPORT bool ts_guc_enable_async_append;
 extern TSDLLEXPORT bool ts_guc_enable_skip_scan;
 extern TSDLLEXPORT bool ts_guc_enable_chunkwise_aggregation;
 extern TSDLLEXPORT bool ts_guc_enable_vectorized_aggregation;