diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 6212237935..32904a9f88 100755
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -8,9 +8,6 @@ enable_testing()
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-# We do not need any compilers' extensions, so we disable them.
-set(CMAKE_CXX_EXTENSIONS OFF)
-
 option(
     ARCTICDB_USING_CONDA
     "Whether ArcticDB's build system relies on conda for resolving its dependencies."
@@ -91,6 +88,8 @@ endif()
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+# We do not need any compilers' extensions, so we disable them.
+set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 set(FIND_LIBRARY_USE_LIB64_PATHS ON)
@@ -122,4 +121,4 @@ target_include_directories(arcticdb_core_static PUBLIC
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>"
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/proto/arcticc/pb2/proto/>"
         "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
-)
\ No newline at end of file
+)