diff --git a/sys/net/ppp_comp.h b/sys/net/ppp_comp.h
index b777bfc2d3b0..5cf591be6411 100644
--- a/sys/net/ppp_comp.h
+++ b/sys/net/ppp_comp.h
@@ -30,19 +30,6 @@
 #ifndef _NET_PPP_COMP_H
 #define _NET_PPP_COMP_H
 
-/*
- * The following symbols control whether we include code for
- * various compression methods.
- */
-#ifndef DO_BSD_COMPRESS
-#define DO_BSD_COMPRESS	1	/* by default, include BSD-Compress */
-#endif
-#ifndef DO_DEFLATE
-#define DO_DEFLATE	1	/* by default, include Deflate */
-#endif
-#define DO_PREDICTOR_1	0
-#define DO_PREDICTOR_2	0
-
 /*
  * Structure giving methods for compression/decompression.
  */