diff --git a/formatters/astyle/lib/CMakeLists.txt b/formatters/astyle/lib/CMakeLists.txt
index 7af6d0c781..16989b1bbf 100644
--- a/formatters/astyle/lib/CMakeLists.txt
+++ b/formatters/astyle/lib/CMakeLists.txt
@@ -1,12 +1,13 @@
-# astyle lib throws lots of warnings with -Wdocumentation
-string(REPLACE "-Wdocumentation" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-
 set(astylelib_SRCS
     ASBeautifier.cpp
     ASEnhancer.cpp
     ASFormatter.cpp
     ASResource.cpp
     ASLocalizer.cpp
 )
 add_library(astylelib STATIC ${astylelib_SRCS})
 set_property(TARGET astylelib PROPERTY POSITION_INDEPENDENT_CODE ON)
+if (CMAKE_COMPILER_CXX_ID MATCHES "Clang")
+    # astyle lib throws lots of warnings with -Wdocumentation
+    target_compile_options(astylelib PRIVATE -Wno-documentation)
+endif()