@@ -16,20 +16,20 @@
 
 #import "OFObject.h"
 #import "OFString.h"
 #import "OFINICategory.h"
 
-@class OFMutableArray;
+@class OFMutableArray OF_GENERIC(ObjectType);
 
 /*!
  * @class OFINIFile OFINIFile.h ObjFW/OFINIFile.h
  *
  * @brief A class for reading, creating and modifying INI files.
  */
 @interface OFINIFile: OFObject
 {
-	OFMutableArray *_categories;
+	OFMutableArray OF_GENERIC(OFINICategory*) *_categories;
 }
 
 /*!
  * @brief Creates a new OFINIFile with the contents of the specified file.
  *