@@ -391,11 +391,11 @@
 - (void)observe
 {
 	[self observeForTimeInterval: -1];
 }
 
-- (bool)observeForTimeInterval: (double)timeInterval
+- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
 {
 	OF_UNRECOGNIZED_SELECTOR
 }
 
 - (bool)observeUntilDate: (OFDate*)date