diff --git a/src/backend/utils/misc/queryjumble.c b/src/backend/utils/misc/queryjumble.c
index a8508463e7..dd1ffbd546 100644
--- a/src/backend/utils/misc/queryjumble.c
+++ b/src/backend/utils/misc/queryjumble.c
@@ -37,8 +37,6 @@
 #include "parser/scansup.h"
 #include "utils/queryjumble.h"
 
-#define JUMBLE_SIZE                            1024    /* query serialization buffer size */
-
 /* GUC parameters */
 int                    compute_query_id = COMPUTE_QUERY_ID_AUTO;