diff --git a/kernel/clock.cpp b/kernel/clock.cpp
index c5ae5144..8cfb2d1a 100644
--- a/kernel/clock.cpp
+++ b/kernel/clock.cpp
@@ -277,7 +277,7 @@ struct timespec Clock::SleepUntil(struct timespec expiration)
 		struct timespec now = current_time;
 		UnlockClock();
 
-		if ( timespec_le(now, expiration) )
+		if ( timespec_le(expiration, now) )
 			break;
 
 		if ( Signal::IsPending() )