@@ -30,11 +30,11 @@
 # define FirstType id
 # define SecondType id
 # define ThirdType id
 #endif
 {
-	OF_RESERVE_IVARS(4)
+	OF_RESERVE_IVARS(OFMutableTriple, 4)
 }
 
 /*!
  * @brief The first object of the triple.
  */