@@ -109,16 +109,16 @@
 - (void)reverse;
 
 /**
  * \brief Converts the OFMutableString to uppercase.
  */
-- (void)upper;
+- (void)uppercase;
 
 /**
  * \brief Converts the OFMutableString to lowercase.
  */
-- (void)lower;
+- (void)lowercase;
 
 /**
  * \brief Inserts a string at the specified index.
  *
  * \param string The string to insert