diff --git a/src/backend/replication/slot.c b/src/backend/replication/slot.c
index 4508408c79b..f8ea9d0e33f 100644
--- a/src/backend/replication/slot.c
+++ b/src/backend/replication/slot.c
@@ -1830,6 +1830,7 @@ SaveSlotToPath(ReplicationSlot *slot, const char *dir, int elevel)
 
 		pgstat_report_wait_end();
 		CloseTransientFile(fd);
+		unlink(tmppath);
 		LWLockRelease(&slot->io_in_progress_lock);
 
 		/* if write didn't set errno, assume problem is no disk space */
@@ -1850,7 +1851,9 @@ SaveSlotToPath(ReplicationSlot *slot, const char *dir, int elevel)
 
 		pgstat_report_wait_end();
 		CloseTransientFile(fd);
+		unlink(tmppath);
 		LWLockRelease(&slot->io_in_progress_lock);
+
 		errno = save_errno;
 		ereport(elevel,
 				(errcode_for_file_access(),
@@ -1864,7 +1867,9 @@ SaveSlotToPath(ReplicationSlot *slot, const char *dir, int elevel)
 	{
 		int			save_errno = errno;
 
+		unlink(tmppath);
 		LWLockRelease(&slot->io_in_progress_lock);
+
 		errno = save_errno;
 		ereport(elevel,
 				(errcode_for_file_access(),
@@ -1878,7 +1883,9 @@ SaveSlotToPath(ReplicationSlot *slot, const char *dir, int elevel)
 	{
 		int			save_errno = errno;
 
+		unlink(tmppath);
 		LWLockRelease(&slot->io_in_progress_lock);
+
 		errno = save_errno;
 		ereport(elevel,
 				(errcode_for_file_access(),