diff --git a/core/dev/leds.c b/core/dev/leds.c
index 97557cd7f..b18eccb89 100644
--- a/core/dev/leds.c
+++ b/core/dev/leds.c
@@ -28,7 +28,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * @(#)$Id: leds.c,v 1.2 2006/10/09 11:55:02 adamdunkels Exp $
+ * @(#)$Id: leds.c,v 1.3 2006/10/09 14:38:23 nifi Exp $
  */
 
 #include "dev/leds.h"
@@ -39,7 +39,7 @@ static unsigned char leds, invert;
 static void
 show_leds(void)
 {
-  leds_arch_set(leds);
+  leds_arch_set(leds ^ invert);
 }
 /*---------------------------------------------------------------------------*/
 void
@@ -87,7 +87,7 @@ leds_toggle(unsigned char leds)
 
 /*   invert the ínvert register using the leds parameter */
 void leds_invert(unsigned char l) {
-  leds = ~leds;
+  invert = invert ^ l;
   show_leds();
 }