diff --git a/algo/ca/core/data/CaTimesliceHeader.cxx b/algo/ca/core/data/CaTimesliceHeader.cxx
index f0e543305168616814ca2a3abade895777e8c0e1..b16d4b396fdd038d32dc666956e02c3a39fc1925 100644
--- a/algo/ca/core/data/CaTimesliceHeader.cxx
+++ b/algo/ca/core/data/CaTimesliceHeader.cxx
@@ -7,8 +7,6 @@
 /// \since  15.02.2024
 /// \author Sergei Zharko <s.zharko@gsi.de>
 
-#pragma once
-
 #include "CaTimesliceHeader.h"
 
 #include <sstream>