diff --git a/sys/net/routing/rpl/trickle.c b/sys/net/routing/rpl/trickle.c
index 6ecc7a07c5..83b4cfe75d 100644
--- a/sys/net/routing/rpl/trickle.c
+++ b/sys/net/routing/rpl/trickle.c
@@ -19,7 +19,6 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <math.h>
 
 #include "inttypes.h"
 #include "trickle.h"
diff --git a/sys/net/transport_layer/destiny/socket.c b/sys/net/transport_layer/destiny/socket.c
index 54edb69085..2d267aaad3 100644
--- a/sys/net/transport_layer/destiny/socket.c
+++ b/sys/net/transport_layer/destiny/socket.c
@@ -16,7 +16,6 @@
  */
 
 #include <inttypes.h>
-#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/sys/net/transport_layer/destiny/tcp_timer.c b/sys/net/transport_layer/destiny/tcp_timer.c
index d2da0b9d8f..8b7fb564b1 100644
--- a/sys/net/transport_layer/destiny/tcp_timer.c
+++ b/sys/net/transport_layer/destiny/tcp_timer.c
@@ -15,7 +15,6 @@
  * @}
  */
 
-#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>