diff --git a/src/box/vy_scheduler.c b/src/box/vy_scheduler.c
index 140d289f8b00da7842205adefece5fdb3063d750..9563508cd8ec574571181fc4ef72da34fa36d0e6 100644
--- a/src/box/vy_scheduler.c
+++ b/src/box/vy_scheduler.c
@@ -1239,7 +1239,12 @@ vy_task_dump_complete(struct vy_task *task)
 	}
 	lsm->dump_lsn = MAX(lsm->dump_lsn, dump_lsn);
 	vy_lsm_acct_dump(lsm, &dump_input, &dump_output);
-	scheduler->stat.dump_input += dump_input.bytes;
+	/*
+	 * Indexes of the same space share a memory level so we
+	 * account dump input only when the primary index is dumped.
+	 */
+	if (lsm->index_id == 0)
+		scheduler->stat.dump_input += dump_input.bytes;
 	scheduler->stat.dump_output += dump_output.bytes;
 
 	/* The iterator has been cleaned up in a worker thread. */
diff --git a/test/vinyl/stat.result b/test/vinyl/stat.result
index e8780e5bdca9e13cab5cd4eab99ba8c5370b611d..3050e43d5d11b0d4a7236bbbc54be3d483950f6a 100644
--- a/test/vinyl/stat.result
+++ b/test/vinyl/stat.result
@@ -1125,7 +1125,7 @@ box.snapshot()
 stat_diff(gstat(), st, 'scheduler')
 ---
 - dump_count: 1
-  dump_input: 208400
+  dump_input: 104200
   dump_output: 103592
 ...
 for i = 1, 100, 10 do s:replace{i, i, string.rep('y', 1000)} end
@@ -1141,7 +1141,7 @@ box.snapshot()
 stat_diff(gstat(), st, 'scheduler')
 ---
 - dump_count: 1
-  dump_input: 21230
+  dump_input: 10420
   dump_output: 10371
 ...
 st = gstat()