diff --git a/sshzlib.c b/sshzlib.c
index 373c7793..94f0b80c 100644
--- a/sshzlib.c
+++ b/sshzlib.c
@@ -698,9 +698,9 @@ int zlib_compress_block(void *handle, unsigned char *block, int len,
 
 	    /*
 	     * Start a Deflate (RFC1951) uncompressed block. We
-	     * transmit a zero bit (BFINAL=0), followed by a zero
-	     * bit and a one bit (BTYPE=00). Of course these are in
-	     * the wrong order (00 0).
+	     * transmit a zero bit (BFINAL=0), followed by two more
+	     * zero bits (BTYPE=00). Of course these are in the
+	     * wrong order (00 0), not that it matters.
 	     */
 	    outbits(out, 0, 3);