diff --git a/isisd/isis_csm.h b/isisd/isis_csm.h
index 23cc215..d6b13ac 100644
--- a/isisd/isis_csm.h
+++ b/isisd/isis_csm.h
@@ -28,9 +28,9 @@
  * Circuit states
  */
 #define C_STATE_NA   0
-#define C_STATE_INIT 1 /* Connected to interface */
-#define C_STATE_CONF 2 /* Configured for ISIS    */
-#define C_STATE_UP   3 /* CONN | CONF            */ 
+#define C_STATE_INIT 1		/* Connected to interface */
+#define C_STATE_CONF 2		/* Configured for ISIS    */
+#define C_STATE_UP   3		/* CONN | CONF            */
 
 /*
  * Circuit events
@@ -40,8 +40,8 @@
 #define ISIS_DISABLE   3
 #define IF_DOWN_FROM_Z 4
 
-struct isis_circuit *isis_csm_state_change (int event, 
-                                            struct isis_circuit *circuit, 
-                                            void *arg);
+struct isis_circuit *isis_csm_state_change (int event,
+					    struct isis_circuit *circuit,
+					    void *arg);
 
 #endif /* _ZEBRA_ISIS_CSM_H */