@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
+ * Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
  *
  * All rights reserved.
  *
  * This file is part of ObjFW. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
@@ -65,14 +65,14 @@
 		for (long i = 0; i < protocolList->count; i++)
 			if (protocol_conformsToProtocol(protocolList->list[i],
 			    protocol))
 				return true;
 
-	objc_global_mutex_lock();
+	objc_globalMutex_lock();
 
-	if ((categories = objc_categories_for_class(class)) == NULL) {
-		objc_global_mutex_unlock();
+	if ((categories = objc_categoriesForClass(class)) == NULL) {
+		objc_globalMutex_unlock();
 		return false;
 	}
 
 	for (long i = 0; categories[i] != NULL; i++) {
 		for (struct objc_protocol_list *protocolList =
@@ -79,16 +79,16 @@
 		    categories[i]->protocols; protocolList != NULL;
 		    protocolList = protocolList->next) {
 			for (long j = 0; j < protocolList->count; j++) {
 				if (protocol_conformsToProtocol(
 				    protocolList->list[j], protocol)) {
-					objc_global_mutex_unlock();
+					objc_globalMutex_unlock();
 					return true;
 				}
 			}
 		}
 	}
 
-	objc_global_mutex_unlock();
+	objc_globalMutex_unlock();
 
 	return false;
 }