@@ -17,10 +17,12 @@
 #import "OFRunLoop.h"
 #import "OFStream.h"
 #ifdef OF_HAVE_SOCKETS
 # import "OFUDPSocket.h"
 #endif
+
+OF_ASSUME_NONNULL_BEGIN
 
 @interface OFRunLoop (OF_PRIVATE_CATEGORY)
 + (void)OF_setMainRunLoop: (OFRunLoop*)runLoop;
 #ifdef OF_HAVE_SOCKETS
 + (void)OF_addAsyncReadForStream: (OFStream*)stream
@@ -68,5 +70,7 @@
 # endif
 + (void)OF_cancelAsyncRequestsForObject: (id)object;
 #endif
 - (void)OF_removeTimer: (OFTimer*)timer;
 @end
+
+OF_ASSUME_NONNULL_END