diff --git a/CMake/SofaPython3Tools.cmake b/CMake/SofaPython3Tools.cmake
index 7395581a..fb2acd39 100644
--- a/CMake/SofaPython3Tools.cmake
+++ b/CMake/SofaPython3Tools.cmake
@@ -110,7 +110,7 @@ function(SP3_add_python_module)
     )
 
     if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-        target_compile_options(${A_TARGET} PRIVATE -fsized-deallocation)
+        target_compile_options(${A_TARGET} PUBLIC -fsized-deallocation)
     endif()
 
     if (NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
diff --git a/Plugin/CMakeLists.txt b/Plugin/CMakeLists.txt
index 45912fc3..ee18a241 100644
--- a/Plugin/CMakeLists.txt
+++ b/Plugin/CMakeLists.txt
@@ -60,7 +60,7 @@ set_target_properties(
 
 if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
     # Sized deallocaion is not enabled by default under clang after c++14
-    set(CMAKE_CXX_FLAGS "-fsized-deallocation")
+    target_compile_options(${PROJECT_NAME} PUBLIC "-fsized-deallocation")
 endif ()
 
 if(CMAKE_SYSTEM_NAME STREQUAL Linux)