Index: src/OFRunLoop.h
==================================================================
--- src/OFRunLoop.h
+++ src/OFRunLoop.h
@@ -59,19 +59,20 @@
 {
 	OFMutableDictionary *_states;
 #ifdef OF_HAVE_THREADS
 	OFMutex *_statesMutex;
 #endif
-	of_run_loop_mode_t _currentMode;
+	of_run_loop_mode_t _Nullable _currentMode;
 	volatile bool _stop;
 }
 
 #ifdef OF_HAVE_CLASS_PROPERTIES
 @property (class, readonly, nullable, nonatomic) OFRunLoop *mainRunLoop;
 @property (class, readonly, nullable, nonatomic) OFRunLoop *currentRunLoop;
 #endif
-@property (readonly, nonatomic) of_run_loop_mode_t currentMode;
+@property OF_NULLABLE_PROPERTY (readonly, nonatomic)
+    of_run_loop_mode_t currentMode;
 
 /*!
  * @brief Returns the run loop for the main thread.
  *
  * @return The run loop for the main thread
@@ -119,15 +120,15 @@
  *
  * @param mode The mode in which to run the run loop
  * @param deadline The date until which the run loop should run at the longest
  */
 - (void)runMode: (of_run_loop_mode_t)mode
-     beforeDate: (OFDate *)deadline;
+     beforeDate: (nullable OFDate *)deadline;
 
 /*!
  * @brief Stops the run loop. If there is still an operation being executed, it
  *	  is finished before the run loop stops.
  */
 - (void)stop;
 @end
 
 OF_ASSUME_NONNULL_END