diff --git a/roofit/roofitcore/CMakeLists.txt b/roofit/roofitcore/CMakeLists.txt
index 92dc05edf7b16cad4eb2b5ec6110e255e7a672a4..3115c056ee2a12a78d614aaca530df9a9d3bc136 100644
--- a/roofit/roofitcore/CMakeLists.txt
+++ b/roofit/roofitcore/CMakeLists.txt
@@ -471,4 +471,8 @@ foreach(incl ${fitcore_incl})
    target_include_directories(RooFitCore PUBLIC $<BUILD_INTERFACE:${incl}>)
 endforeach()
 
+# Modification for Fp311Online@Ruhr-Universität Bochum
+target_compile_definitions(RooFitCore PRIVATE __ROOFIT_NOBANNER)
+# End of modification
+
 ROOT_ADD_TEST_SUBDIRECTORY(test)