diff --git a/Laboratory regulations.md b/Laboratory regulations.md
index 8c41a2e599b06d9dd5dc08155f07d4146e130e28..b379941ae6c893ff0eb9751c6db650591d480051 100644
--- a/Laboratory regulations.md	
+++ b/Laboratory regulations.md	
@@ -45,7 +45,7 @@ Safety regulations must be strictly observed, and not only in your own interest.
 
 In the laboratory, only work may be carried out that serves the respective task and that has been agreed upon with the professor or his or her representative (employee).
 
-Knowledge of the laboratory regulations is a prerequisite for working in the clean room. Please send a message with a2803c8f-a1c6-49dd-94e2-cc03171b0169 to gruis@cst.rwth-aachen.de.
+Knowledge of the laboratory regulations is a prerequisite for working in the clean room.
 
 ### 1.4. Material
 Any equipment etc. that is not part of the laboratory's inventory may only be used with the approval of the laboratory management.