Extra arg belongs to _decqp.
diff --git a/src/cmd/upas/nfs/decode.c b/src/cmd/upas/nfs/decode.c
index df37490..572ae7b 100644
--- a/src/cmd/upas/nfs/decode.c
+++ b/src/cmd/upas/nfs/decode.c
@@ -69,7 +69,7 @@
 	case QuotedPrintableU:
 		l = strlen(s)+1;
 		t = emalloc(l);
-		l = decqp((uchar*)t, l, s, l-1, kind==QuotedPrintableU);
+		l = _decqp((uchar*)t, l, s, l-1, kind==QuotedPrintableU);
 		*len = l;
 		t[l] = 0;
 		return t;