diff --git a/Concurrent Systems/notes/4b -.md b/Concurrent Systems/notes/4b -.md
index 2f5ff51..423abac 100644
--- a/Concurrent Systems/notes/4b -.md	
+++ b/Concurrent Systems/notes/4b -.md	
@@ -55,4 +55,4 @@ C.signal() :=
 		PRIO.down()
 		NPR--
 ```
-
+p.s. The wait **always** suspends, even if there is only a process.
\ No newline at end of file