diff --git a/plugins/astyle/3rdparty/libastyle/CMakeLists.txt b/plugins/astyle/3rdparty/libastyle/CMakeLists.txt
index 2b4eb0d99f..db74ef1f95 100644
--- a/plugins/astyle/3rdparty/libastyle/CMakeLists.txt
+++ b/plugins/astyle/3rdparty/libastyle/CMakeLists.txt
@@ -1,28 +1,25 @@
 remove_definitions(
     -DQT_NO_CAST_FROM_ASCII
     -DQT_NO_CAST_TO_ASCII
     -DQT_NO_CAST_FROM_BYTEARRAY
 )
 
 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_CXX_COMPILER_ID MATCHES "Clang")
     # astyle lib throws lots of warnings with -Wdocumentation
     add_target_compile_flag_if_supported(astylelib PRIVATE "-Wno-documentation")
 endif()
-if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    add_target_compile_flag_if_supported(astylelib PRIVATE "-Wno-zero-as-null-pointer-constant")
-endif()
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     add_target_compile_flag_if_supported(astylelib PRIVATE "-Wno-suggest-override")
 endif()
 # add as SYSTEM include dir so compiler does not emit warnings for the lib headers
 target_include_directories(astylelib SYSTEM PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})