diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 4611e128..c1aa6ce9 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -31,7 +31,7 @@ elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unknown-pragmas")
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-padded -Werror -Wno-documentation-unknown-command")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-padded -Wno-documentation-unknown-command")
 endif()
 
 if(APPLE)
@@ -188,9 +188,6 @@ endif()
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/detail/serialization/miniz.cpp PROPERTIES COMPILE_FLAGS "-Wno-undef")
     set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/detail/serialization/zstream.cpp PROPERTIES COMPILE_FLAGS "-Wno-undef -Wno-shorten-64-to-32")
-    if(ARROW)
-        set_source_files_properties(${XLNT_SOURCE_DIR}/utils/xlntarrow.cpp PROPERTIES COMPILE_FLAGS "-w")
-    endif()
 endif()
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")