diff --git a/cmake/avm_configure.cmake b/cmake/avm_configure.cmake
index efd23634f5..ec567cb7a1 100644
--- a/cmake/avm_configure.cmake
+++ b/cmake/avm_configure.cmake
@@ -348,9 +348,6 @@ else()
     add_compiler_flag_if_supported("-UNDEBUG")
   endif()
 
-  if("${build_type_lowercase}" MATCHES "rel")
-    add_compiler_flag_if_supported("-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0")
-  endif()
   add_compiler_flag_if_supported("-D_LARGEFILE_SOURCE")
   add_compiler_flag_if_supported("-D_FILE_OFFSET_BITS=64")
 endif()