@@ -34,18 +34,18 @@
 
 	empty_level2 = malloc(sizeof(struct objc_sparsearray_level2));
 	if (empty_level2 == NULL)
 		OBJC_ERROR("Not enough memory to allocate sparse array!");
 
-	empty_level2->empty = YES;
+	empty_level2->empty = true;
 
 #ifdef OF_SELUID24
 	empty_level3 = malloc(sizeof(struct objc_sparsearray_level3));
 	if (empty_level3 == NULL)
 		OBJC_ERROR("Not enough memory to allocate sparse array!");
 
-	empty_level3->empty = YES;
+	empty_level3->empty = true;
 #endif
 
 #ifdef OF_SELUID24
 	for (i = 0; i < 256; i++) {
 		empty_level2->buckets[i] = empty_level3;
@@ -148,11 +148,11 @@
 
 		if (t == NULL)
 			OBJC_ERROR("Not enough memory to insert into sparse "
 			    "array!");
 
-		t->empty = NO;
+		t->empty = false;
 
 		for (l = 0; l < 256; l++)
 #ifdef OF_SELUID24
 			t->buckets[l] = empty_level3;
 #else
@@ -171,11 +171,11 @@
 
 		if (t == NULL)
 			OBJC_ERROR("Not enough memory to insert into sparse "
 			    "array!");
 
-		t->empty = NO;
+		t->empty = false;
 
 		for (l = 0; l < 256; l++)
 			t->buckets[l] = NULL;
 
 		s->buckets[i]->buckets[j] = t;