diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 22e81e7..d7e8633 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -13623,20 +13623,6 @@ transformPartitionSpec(Relation rel, PartitionSpec *partspec, char *strategy)
 		PartitionElem *pelem = castNode(PartitionElem, lfirst(l));
 		ListCell   *lc;
 
-		/* Check for PARTITION BY ... (foo, foo) */
-		foreach(lc, newspec->partParams)
-		{
-			PartitionElem *pparam = castNode(PartitionElem, lfirst(lc));
-
-			if (pelem->name && pparam->name &&
-				strcmp(pelem->name, pparam->name) == 0)
-				ereport(ERROR,
-						(errcode(ERRCODE_DUPLICATE_COLUMN),
-						 errmsg("column \"%s\" appears more than once in partition key",
-								pelem->name),
-						 parser_errposition(pstate, pelem->location)));
-		}
-
 		if (pelem->expr)
 		{
 			/* Copy, to avoid scribbling on the input */