diff --git a/platform/cooja/Makefile.cooja b/platform/cooja/Makefile.cooja
index 63c98e352..511f56ba2 100644
--- a/platform/cooja/Makefile.cooja
+++ b/platform/cooja/Makefile.cooja
@@ -1,4 +1,4 @@
-# $Id: Makefile.cooja,v 1.35 2009/10/28 13:39:15 nifi Exp $
+# $Id: Makefile.cooja,v 1.36 2010/01/14 19:14:47 nifi Exp $
 
 ## The COOJA Simulator Contiki platform Makefile
 ##
@@ -50,7 +50,7 @@ CONTIKI_APP_OBJ = $(CONTIKI_APP).co
 COOJA = $(CONTIKI)/platform/$(TARGET)
 CONTIKI_TARGET_DIRS = . dev lib sys cfs net
 
-COOJA_BASE	= simEnvChange.c irq.c cooja_mt.c cooja_mtarch.c rtimer-arch.c slip.c
+COOJA_BASE	= simEnvChange.c cooja_mt.c cooja_mtarch.c rtimer-arch.c slip.c
 
 COOJA_INTFS	= beep.c button-sensor.c ip.c leds-arch.c moteid.c \
 		    pir-sensor.c rs232.c vib-sensor.c \
diff --git a/platform/cooja/dev/irq.c b/platform/cooja/dev/irq.c
deleted file mode 100644
index d1e2ae169..000000000
--- a/platform/cooja/dev/irq.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2006, Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Institute nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $Id: irq.c,v 1.1 2006/08/21 12:11:20 fros4943 Exp $
- */
-
-void
-irq_init(void)
-{
-}
-