diff --git a/src/utils/state_machine.h b/src/utils/state_machine.h
index a51431578..204c8a85a 100644
--- a/src/utils/state_machine.h
+++ b/src/utils/state_machine.h
@@ -9,7 +9,7 @@
  * implement a state machine. In addition to including this header file, each
  * file implementing a state machine must define STATE_MACHINE_DATA to be the
  * data structure including state variables (enum machine_state,
- * Boolean changed), and STATE_MACHINE_DEBUG_PREFIX to be a string that is used
+ * bool changed), and STATE_MACHINE_DEBUG_PREFIX to be a string that is used
  * as a prefix for all debug messages. If SM_ENTRY_MA macro is used to define
  * a group of state machines with shared data structure, STATE_MACHINE_ADDR
  * needs to be defined to point to the MAC address used in debug output.
@@ -45,7 +45,7 @@ static void sm_ ## machine ## _ ## state ## _Enter(STATE_MACHINE_DATA *sm, \
  */
 #define SM_ENTRY(machine, state) \
 if (!global || sm->machine ## _state != machine ## _ ## state) { \
-	sm->changed = TRUE; \
+	sm->changed = true; \
 	wpa_printf(MSG_DEBUG, STATE_MACHINE_DEBUG_PREFIX ": " #machine \
 		   " entering state " #state); \
 } \
@@ -64,7 +64,7 @@ sm->machine ## _state = machine ## _ ## state;
  */
 #define SM_ENTRY_M(machine, _state, data) \
 if (!global || sm->data ## _ ## state != machine ## _ ## _state) { \
-	sm->changed = TRUE; \
+	sm->changed = true; \
 	wpa_printf(MSG_DEBUG, STATE_MACHINE_DEBUG_PREFIX ": " \
 		   #machine " entering state " #_state); \
 } \
@@ -82,7 +82,7 @@ sm->data ## _ ## state = machine ## _ ## _state;
  */
 #define SM_ENTRY_MA(machine, _state, data) \
 if (!global || sm->data ## _ ## state != machine ## _ ## _state) { \
-	sm->changed = TRUE; \
+	sm->changed = true; \
 	wpa_printf(MSG_DEBUG, STATE_MACHINE_DEBUG_PREFIX ": " MACSTR " " \
 		   #machine " entering state " #_state, \
 		   MAC2STR(STATE_MACHINE_ADDR)); \