diff --git a/platform/cooja/Makefile.cooja b/platform/cooja/Makefile.cooja
index 03ef63412..17335e50f 100644
--- a/platform/cooja/Makefile.cooja
+++ b/platform/cooja/Makefile.cooja
@@ -1,4 +1,4 @@
-# $Id: Makefile.cooja,v 1.22 2007/11/29 04:57:04 fros4943 Exp $
+# $Id: Makefile.cooja,v 1.23 2008/10/05 15:43:09 fros4943 Exp $
 
 ## The COOJA Simulator Contiki platform Makefile
 ##
@@ -79,18 +79,26 @@ CFLAGSNO = $(EXTRA_CC_ARGS) -Wall -g -I/usr/local/include
 CFLAGS   = $(CFLAGSNO)
 
 ### Define custom targets
+REDEF_PRINTF=1
 $(LIBFILE): $(MAINFILE) $(PROJECT_OBJECTFILES) $(ARFILE)
 ifdef SYMBOLS
+	@echo Generating symbols
 	# Recreate symbols file and relink with final memory layout (twice)
 	${CONTIKI}/tools/make-symbols-nm $(LIBFILE)
 	$(CC) $(CFLAGS) -c symbols.c -o $(OBJECTDIR)/symbols.o
 	$(LINK_COMMAND_1) $^ $(LINK_COMMAND_2)
 	${CONTIKI}/tools/make-symbols-nm $(LIBFILE)
 	$(CC) $(CFLAGS) -c symbols.c -o $(OBJECTDIR)/symbols.o
+endif ## SYMBOLS
+	
+ifdef REDEF_PRINTF
+	@echo Redefining printf
+	-$(foreach OBJ,$^, objcopy --redefine-sym printf=log_printf $(OBJ); )		
+	-$(foreach OBJ,$^, objcopy --redefine-sym puts=log_puts $(OBJ); )		
+	-$(foreach OBJ,$^, objcopy --redefine-sym putchar=log_putchar $(OBJ); )		
+endif ## REDEF_PRINTF
+	
 	$(LINK_COMMAND_1) $^ $(LINK_COMMAND_2)
-else
-	$(LINK_COMMAND_1) $^ $(LINK_COMMAND_2)
-endif
 
 $(ARFILE): ${addprefix $(OBJECTDIR)/, $(CONTIKI_SOURCEFILES:.c=.o)}
 	$(AR_COMMAND_1) $^ $(AR_COMMAND_2)