diff --git a/drivers/cc110x_ng/cc110x-defaultSettings.c b/drivers/cc110x_ng/cc110x-defaultSettings.c
index 844dcb5758..fddfedcf89 100644
--- a/drivers/cc110x_ng/cc110x-defaultSettings.c
+++ b/drivers/cc110x_ng/cc110x-defaultSettings.c
@@ -41,7 +41,7 @@ and the mailinglist (subscription via web site)
  * @note		$Id: cc110x-defaultSettings.c 2058 2010-03-31 08:59:31Z hillebra $
  */
 
-#include <cc110x-defaultSettings.h>
+#include "cc110x-defaultSettings.h"
 
 /**
  * Usable, non overlapping channels and corresponding frequencies
diff --git a/drivers/cc110x_ng/spi/cc110x_spi.c b/drivers/cc110x_ng/spi/cc110x_spi.c
index 867f93111f..9b2f8234ef 100644
--- a/drivers/cc110x_ng/spi/cc110x_spi.c
+++ b/drivers/cc110x_ng/spi/cc110x_spi.c
@@ -44,13 +44,13 @@ and the mailinglist (subscription via web site)
 
 #include <stdio.h>
 
-#include <cc110x_ng.h>
-#include <cc110x-arch.h>
-#include <cc110x-internal.h>
-#include <cc110x_spi.h>
-#include <cc110x-reg.h>
+#include "cc110x_ng.h"
+#include "cc110x-arch.h"
+#include "cc110x-internal.h"
+#include "cc110x_spi.h"
+#include "cc110x-reg.h"
 
-#include <irq.h>
+#include "irq.h"
 
 /*---------------------------------------------------------------------------*/
 //					    CC1100 SPI access
diff --git a/sys/include/vtimer.h b/sys/include/vtimer.h
index c50f5a496b..d17f1ec8ed 100644
--- a/sys/include/vtimer.h
+++ b/sys/include/vtimer.h
@@ -19,8 +19,8 @@
 #ifndef __VTIMER_H
 #define __VTIMER_H 
 
-#include <queue.h>
-#include <timex.h>
+#include "queue.h"
+#include "timex.h"
 
 #define MSG_TIMER 12345
 
diff --git a/sys/net/sixlowpan/sixlowpan.c b/sys/net/sixlowpan/sixlowpan.c
index 444bc1c4ca..a3a554bb58 100644
--- a/sys/net/sixlowpan/sixlowpan.c
+++ b/sys/net/sixlowpan/sixlowpan.c
@@ -2,14 +2,14 @@
 #include <string.h>
 #include <stdlib.h>
 #include <limits.h>
-#include <vtimer.h>
-#include <timex.h>
-#include <debug.h>
-#include <thread.h>
-#include <mutex.h>
-#include <hwtimer.h>
-#include <rtc.h>
-#include <lpc2387-rtc.h>
+
+#include "vtimer.h"
+#include "timex.h"
+#include "debug.h"
+#include "thread.h"
+#include "mutex.h"
+#include "hwtimer.h"
+#include "rtc.h"
 #include "msg.h"
 #include "sixlowmac.h"
 #include "sixlowpan.h"