diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c
index ff903bdb96a..595dead3c54 100644
--- a/src/backend/access/heap/heapam.c
+++ b/src/backend/access/heap/heapam.c
@@ -2172,8 +2172,12 @@ heap_multi_insert(Relation relation, HeapTuple *tuples, int ntuples,
 		/* NO EREPORT(ERROR) from here till changes are logged */
 		START_CRIT_SECTION();
 
-		/* Put as many tuples as fit on this page */
-		for (nthispage = 0; ndone + nthispage < ntuples; nthispage++)
+		/*
+		 * RelationGetBufferForTuple has ensured that the first tuple fits.
+		 * Put that on the page, and then as many other tuples as fit.
+		 */
+		RelationPutHeapTuple(relation, buffer, heaptuples[ndone]);
+		for (nthispage = 1; ndone + nthispage < ntuples; nthispage++)
 		{
 			HeapTuple	heaptup = heaptuples[ndone + nthispage];