diff --git a/misc/minicern/CMakeLists.txt b/misc/minicern/CMakeLists.txt
index 66542f68ce3cb..93a737c443e85 100644
--- a/misc/minicern/CMakeLists.txt
+++ b/misc/minicern/CMakeLists.txt
@@ -15,6 +15,6 @@ target_link_libraries(minicern ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
 # Disable optimization since it some cases was causing crashes.
 # Disable warnings, since what has worked for 40 years...
 # (see https://sft.its.cern.ch/jira/browse/ROOT-9179 for the warnings)
-set_target_properties(minicern PROPERTIES COMPILE_FLAGS "-O0 -w")
+#set_target_properties(minicern PROPERTIES COMPILE_FLAGS "-O0 -w")
 # set_target_properties(minicern PROPERTIES COMPILE_FLAGS "-fsanitize=undefined -fsanitize=address")
 # target_link_options(minicern BEFORE PUBLIC -fsanitize=undefined PUBLIC -fsanitize=address)