diff --git a/sftp-client.c b/sftp-client.c
index 10b7992..c797482 100644
--- a/sftp-client.c
+++ b/sftp-client.c
@@ -28,7 +28,7 @@
 /* XXX: copy between two remote sites */
 
 #include "includes.h"
-RCSID("$OpenBSD: sftp-client.c,v 1.33 2002/06/23 09:30:14 deraadt Exp $");
+RCSID("$OpenBSD: sftp-client.c,v 1.34 2002/06/27 10:35:47 deraadt Exp $");
 
 #include "openbsd-compat/fake-queue.h"
 
@@ -1095,7 +1095,7 @@
 			debug3("In write loop, ack for %u %u bytes at %llu",
 			   ack->id, ack->len, (unsigned long long)ack->offset);
 			++ackid;
-			free(ack);
+			xfree(ack);
 		}
 		offset += len;
 	}