diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 80d71eb1039..66620fb4755 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -2544,7 +2544,8 @@ deleted:
 
 		PushActiveSnapshot(GetTransactionSnapshot());
 		perform_work_item(workitem);
-		PopActiveSnapshot();
+		if (ActiveSnapshotSet())	/* transaction could have aborted */
+			PopActiveSnapshot();
 
 		/*
 		 * Check for config changes before acquiring lock for further jobs.