diff --git a/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java b/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
index a70963d96..42f459d9b 100644
--- a/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
+++ b/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: MRM.java,v 1.8 2009/02/18 12:08:10 fros4943 Exp $
+ * $Id: MRM.java,v 1.9 2009/02/24 15:05:36 fros4943 Exp $
  */
 
 package se.sics.mrm;
@@ -147,7 +147,6 @@ public class MRM extends AbstractRadioMedium {
           // Radio OK to receive
           //logger.info("OK, creating connection and starting to transmit");
           newConnection.addDestination(listeningRadio, probData[1]);
-          listeningRadio.signalReceptionStart();
         }
       } else if (probData[1] > currentChannelModel.getParameterDoubleValue("bg_noise_mean")) {
         // Interfere radio
diff --git a/tools/cooja/java/se/sics/cooja/radiomediums/UDGM.java b/tools/cooja/java/se/sics/cooja/radiomediums/UDGM.java
index 7b4f18135..de4037bfa 100644
--- a/tools/cooja/java/se/sics/cooja/radiomediums/UDGM.java
+++ b/tools/cooja/java/se/sics/cooja/radiomediums/UDGM.java
@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: UDGM.java,v 1.21 2009/02/21 09:49:51 fros4943 Exp $
+ * $Id: UDGM.java,v 1.22 2009/02/24 15:05:54 fros4943 Exp $
  */
 
 package se.sics.cooja.radiomediums;
@@ -156,7 +156,6 @@ public class UDGM extends AbstractRadioMedium {
         } else {
           // Radio OK to receive
           newConnection.addDestination(listeningRadio);
-          listeningRadio.signalReceptionStart();
         }
       } else if (distance <= moteInterferenceRange) {
         // Interfere radio