1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstd/rt/kill.rs b/src/libstd/rt/kill.rs
index 789c7531eca..b3e81d4b7b2 100644
--- a/src/libstd/rt/kill.rs
+++ b/src/libstd/rt/kill.rs
@@ -590,7 +590,8 @@ impl Death {
     #[inline]
     pub fn assert_may_sleep(&self) {
         if self.wont_sleep != 0 {
-            rtabort!("illegal atomic-sleep: can't deschedule inside atomically()");
+            rtabort!("illegal atomic-sleep: attempt to reschedule while \
+                      using an Exclusive or LittleLock");
         }
     }
 }