diff --git a/core/net/rime.h b/core/net/rime.h
index 5cd296205..cfd36c6fe 100644
--- a/core/net/rime.h
+++ b/core/net/rime.h
@@ -94,7 +94,7 @@ extern const struct mac_driver *rime_mac;
 struct rime_sniffer {
   struct rime_sniffer *next;
   void (* input_callback)(void);
-  void (* output_callback)(void);
+  void (* output_callback)(int mac_status);
 };
 
 #define RIME_SNIFFER(name, input_callback, output_callback) \
diff --git a/core/net/rime/rime.c b/core/net/rime/rime.c
index 323743cff..08db5b8aa 100644
--- a/core/net/rime/rime.c
+++ b/core/net/rime/rime.c
@@ -151,7 +151,7 @@ static void
 packet_sent(void *ptr, int status, int num_tx)
 {
   struct channel *c = ptr;
-
+  struct rime_sniffer *s;
   
   switch(status) {
   case MAC_TX_COLLISION:
@@ -166,17 +166,14 @@ packet_sent(void *ptr, int status, int num_tx)
   default:
     PRINTF("rime: error %d after %d tx\n", status, num_tx);
   }
-  
-  if(status == MAC_TX_OK) {
-    struct rime_sniffer *s;
-    /* Call sniffers, but only if the packet was sent. */
-    for(s = list_head(sniffers); s != NULL; s = list_item_next(s)) {
-      if(s->output_callback != NULL) {
-        s->output_callback();
-      }
+
+  /* Call sniffers, pass along the MAC status code. */
+  for(s = list_head(sniffers); s != NULL; s = list_item_next(s)) {
+    if(s->output_callback != NULL) {
+      s->output_callback(status);
     }
   }
-  
+
   abc_sent(c, status, num_tx);
 }
 /*---------------------------------------------------------------------------*/