diff --git a/cmake/cmake-modules/CommonSetup.cmake b/cmake/cmake-modules/CommonSetup.cmake
index ffe04214..0d02e6e8 100644
--- a/cmake/cmake-modules/CommonSetup.cmake
+++ b/cmake/cmake-modules/CommonSetup.cmake
@@ -56,7 +56,7 @@ macro(CommonSetup)
                 ${RPC_LIB_DEFINES} ${CMAKE_CXX_FLAGS}")
 
             if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
-                set(CMAKE_CXX_FLAGS "-stdlib=libc++ -Wno-documentation -Wno-unknown-warning-option ${CMAKE_CXX_FLAGS}")
+                set(CMAKE_CXX_FLAGS "-Wno-documentation -Wno-unknown-warning-option ${CMAKE_CXX_FLAGS}")  # -stdlib=libc++
                 find_package(LLVM REQUIRED CONFIG)
                 set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10")
             else()
diff --git a/scripts/build.sh b/scripts/build.sh
index dc702f4f..450b27a2 100644
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -130,14 +130,9 @@ elif [ "$(uname)" = 'Linux' ]; then
         export CXX="g++-${GCC_VERSION}"
         CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"
     else
-        if (( $(echo "${VERSION_ID} < 22.04" | bc -l) )); then
-            CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD} -DCMAKE_CXX_FLAGS=-stdlib=libc++"
-        else
-            CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"
-        fi
         export CC="clang-${CLANG_VERSION}"
         export CXX="clang++-${CLANG_VERSION}"
-        
+        CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"  # not needed: -DCMAKE_CXX_FLAGS=-stdlib=libc++
     fi
 else
     echo 'ERROR: This build script only supports Linux and MacOS.'