diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 5f5068e..6751b18 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -437,7 +437,7 @@
  * fixup_init is called when:
  * - an active object is initialized
  */
-static int work_fixup_init(void *addr, enum debug_obj_state state)
+static bool work_fixup_init(void *addr, enum debug_obj_state state)
 {
 	struct work_struct *work = addr;
 
@@ -445,9 +445,9 @@
 	case ODEBUG_STATE_ACTIVE:
 		cancel_work_sync(work);
 		debug_object_init(work, &work_debug_descr);
-		return 1;
+		return true;
 	default:
-		return 0;
+		return false;
 	}
 }
 
@@ -456,7 +456,7 @@
  * - an active object is activated
  * - an unknown object is activated (might be a statically initialized object)
  */
-static int work_fixup_activate(void *addr, enum debug_obj_state state)
+static bool work_fixup_activate(void *addr, enum debug_obj_state state)
 {
 	struct work_struct *work = addr;
 
@@ -471,16 +471,16 @@
 		if (test_bit(WORK_STRUCT_STATIC_BIT, work_data_bits(work))) {
 			debug_object_init(work, &work_debug_descr);
 			debug_object_activate(work, &work_debug_descr);
-			return 0;
+			return false;
 		}
 		WARN_ON_ONCE(1);
-		return 0;
+		return false;
 
 	case ODEBUG_STATE_ACTIVE:
 		WARN_ON(1);
 
 	default:
-		return 0;
+		return false;
 	}
 }
 
@@ -488,7 +488,7 @@
  * fixup_free is called when:
  * - an active object is freed
  */
-static int work_fixup_free(void *addr, enum debug_obj_state state)
+static bool work_fixup_free(void *addr, enum debug_obj_state state)
 {
 	struct work_struct *work = addr;
 
@@ -496,9 +496,9 @@
 	case ODEBUG_STATE_ACTIVE:
 		cancel_work_sync(work);
 		debug_object_free(work, &work_debug_descr);
-		return 1;
+		return true;
 	default:
-		return 0;
+		return false;
 	}
 }