diff --git a/vnet/vnet/ethernet/mac_swap.c b/vnet/vnet/ethernet/mac_swap.c
index 34dfdf7..c0fec12 100644
--- a/vnet/vnet/ethernet/mac_swap.c
+++ b/vnet/vnet/ethernet/mac_swap.c
@@ -81,9 +81,9 @@
 #undef _
 };
 
-/* 
+/*
  * To drop a pkt and increment one of the previous counters:
- * 
+ *
  * set b0->error = error_node->errors[RANDOM_ERROR_SAMPLE];
  * set next0 to a disposition index bound to "error-drop".
  *
@@ -93,7 +93,7 @@
  *  u32 node_counter_base_index = n->error_heap_index;
  *  vlib_error_main_t * em = &vm->error_main;
  *  em->counters[node_counter_base_index + MAC_SWAP_ERROR_SAMPLE] += 1;
- * 
+ *
  */
 
 typedef enum
@@ -348,7 +348,7 @@
   .vector_size = sizeof (u32),
   .format_trace = format_swap_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  
+
   .n_errors = ARRAY_LEN(mac_swap_error_strings),
   .error_strings = mac_swap_error_strings,