diff --git a/src/backend/access/spgist/spginsert.c b/src/backend/access/spgist/spginsert.c
index ea54ec5bec4..959c0b4517e 100644
--- a/src/backend/access/spgist/spginsert.c
+++ b/src/backend/access/spgist/spginsert.c
@@ -31,6 +31,7 @@
 typedef struct
 {
 	SpGistState spgstate;		/* SPGiST's working state */
+	int64		indtuples;		/* total number of tuples indexed */
 	MemoryContext tmpCtx;		/* per-tuple temporary context */
 } SpGistBuildState;
 
@@ -58,6 +59,9 @@ spgistBuildCallback(Relation index, HeapTuple htup, Datum *values,
 		MemoryContextReset(buildstate->tmpCtx);
 	}
 
+	/* Update total tuple count */
+	buildstate->indtuples += 1;
+
 	MemoryContextSwitchTo(oldCtx);
 	MemoryContextReset(buildstate->tmpCtx);
 }
@@ -134,6 +138,7 @@ spgbuild(PG_FUNCTION_ARGS)
 	 */
 	initSpGistState(&buildstate.spgstate, index);
 	buildstate.spgstate.isBuild = true;
+	buildstate.indtuples = 0;
 
 	buildstate.tmpCtx = AllocSetContextCreate(CurrentMemoryContext,
 										   "SP-GiST build temporary context",
@@ -149,7 +154,8 @@ spgbuild(PG_FUNCTION_ARGS)
 	SpGistUpdateMetaPage(index);
 
 	result = (IndexBuildResult *) palloc0(sizeof(IndexBuildResult));
-	result->heap_tuples = result->index_tuples = reltuples;
+	result->heap_tuples = reltuples;
+	result->index_tuples = buildstate.indtuples;
 
 	PG_RETURN_POINTER(result);
 }