diff --git a/src/backend/utils/adt/tsrank.c b/src/backend/utils/adt/tsrank.c
index fb7dcc955f7..38e384c6505 100644
--- a/src/backend/utils/adt/tsrank.c
+++ b/src/backend/utils/adt/tsrank.c
@@ -175,7 +175,7 @@ SortAndUniqItems(TSQuery q, int *size)
 	if (*size < 2)
 		return res;
 
-	qsort_arg(res, *size, sizeof(QueryOperand **), compareQueryOperand, (void *) operand);
+	qsort_arg(res, *size, sizeof(QueryOperand *), compareQueryOperand, (void *) operand);
 
 	ptr = res + 1;
 	prevptr = res;