@@ -33,20 +33,20 @@
 /**
  * \param class_ The class of the object which caused the exception
  * \param ns The namespace which is unbound
  * \return A new unbound namespace exception
  */
-+ exceptionWithClass: (Class)class_
-	   namespace: (OFString*)ns;
++ (instancetype)exceptionWithClass: (Class)class_
+			 namespace: (OFString*)ns;
 
 /**
  * \param class_ The class of the object which caused the exception
  * \param prefix The prefix which is unbound
  * \return A new unbound namespace exception
  */
-+ exceptionWithClass: (Class)class_
-	      prefix: (OFString*)prefix;
++ (instancetype)exceptionWithClass: (Class)class_
+			    prefix: (OFString*)prefix;
 
 /**
  * Initializes an already allocated unbound namespace exception
  *
  * \param class_ The class of the object which caused the exception