diff --git a/compact_chapoly.py b/compact_chapoly.py
index 42d2698..b5bbd1f 100644
--- a/compact_chapoly.py
+++ b/compact_chapoly.py
@@ -21,8 +21,8 @@ def poly1305(m,k):
 	return unu(a+s,128)
 p16=lambda x:b'\x00'*(-len(x)%16)
 tag=lambda a,k,n,c:poly1305(b''.join((a,p16(a),c,p16(c),unu(len(a),64),unu(len(c),64))),ccb(k,0,n)[:32])
-def enc(a,k,i,f,p):c=bytes(chacha20(k,1,f+i,p));return c+tag(a,k,f+i,c)
-def dec(a,k,i,f,e):
+def enc(a,k,n,p):c=bytes(chacha20(k,1,n,p));return c+tag(a,k,n,c)
+def dec(a,k,n,e):
 	c=e[:-16]
 	if not secrets.compare_digest(e[-16:],tag(a,k,f+i,c)):return None
 	return bytes(chacha20(k,1,f+i,c))