diff --git a/src/backend/executor/nodeHash.c b/src/backend/executor/nodeHash.c
index 8a8fdf2..653faf5 100644
--- a/src/backend/executor/nodeHash.c
+++ b/src/backend/executor/nodeHash.c
@@ -1576,9 +1576,16 @@ ExecHashRemoveNextSkewBucket(HashJoinTable hashtable)
 		/* Decide whether to put the tuple in the hash table or a temp file */
 		if (batchno == hashtable->curbatch)
 		{
+			/* keep tuple in memory - copy it into the new chunk */
+			HashJoinTuple copyTuple;
+
+			copyTuple = (HashJoinTuple) dense_alloc(hashtable, tupleSize);
+			memcpy(copyTuple, hashTuple, tupleSize);
+
 			/* Move the tuple to the main hash table */
-			hashTuple->next = hashtable->buckets[bucketno];
-			hashtable->buckets[bucketno] = hashTuple;
+			copyTuple->next = hashtable->buckets[bucketno];
+			hashtable->buckets[bucketno] = copyTuple;
+
 			/* We have reduced skew space, but overall space doesn't change */
 			hashtable->spaceUsedSkew -= tupleSize;
 		}