diff --git a/.github/ci_vcpkg_package_tests/ci_vcpkg_package_tests_app.cpp b/.github/ci_vcpkg_package_tests/ci_vcpkg_package_tests_app.cpp
index 08aeb1c5..2cf42c9e 100644
--- a/.github/ci_vcpkg_package_tests/ci_vcpkg_package_tests_app.cpp
+++ b/.github/ci_vcpkg_package_tests/ci_vcpkg_package_tests_app.cpp
@@ -63,12 +63,12 @@ int main(int argc, char**argv)
 
     try
     {
-        runnerParams.backendType = HelloImGui::BackendType::Glfw;
+        runnerParams.platformBackendType = HelloImGui::PlatformBackendType::Glfw;
 
         if (argc == 2 && strcmp(argv[1], "sdl") == 0)
-            runnerParams.backendType = HelloImGui::BackendType::Sdl;
+            runnerParams.platformBackendType = HelloImGui::PlatformBackendType::Sdl;
 
-        if (runnerParams.backendType == HelloImGui::BackendType::Glfw)
+        if (runnerParams.platformBackendType == HelloImGui::PlatformBackendType::Glfw)
             printf("Using GLFW backend\n");
         else
             printf("Using SDL backend\n");
diff --git a/hello_imgui_cmake/overlay_vcpkg/test_vcpkg_himgui/test.cpp b/hello_imgui_cmake/overlay_vcpkg/test_vcpkg_himgui/test.cpp
index d571bdb1..ff2b2560 100644
--- a/hello_imgui_cmake/overlay_vcpkg/test_vcpkg_himgui/test.cpp
+++ b/hello_imgui_cmake/overlay_vcpkg/test_vcpkg_himgui/test.cpp
@@ -4,7 +4,7 @@
 int main()
 {
     HelloImGui::RunnerParams runnerParams;
-    runnerParams.backendType = HelloImGui::BackendType::Glfw; // Sdl fails with Vulkan
+    runnerParams.platformBackendType = HelloImGui::PlatformBackendType::Glfw; // Sdl fails with Vulkan
     runnerParams.callbacks.ShowGui = []() {
         #ifdef HELLOIMGUI_HAS_OPENGL
         ImGui::Text("HELLOIMGUI_HAS_OPENGL");
diff --git a/src/hello_imgui/doc_params.md b/src/hello_imgui/doc_params.md
index 0677ff3e..24dd985e 100644
--- a/src/hello_imgui/doc_params.md
+++ b/src/hello_imgui/doc_params.md
@@ -118,11 +118,10 @@ struct RunnerParams
     // Options for the renderer backend
     RendererBackendOptions rendererBackendOptions;
 
-    // `backendType`: _enum BackendType, default=PlatformBackendType::FirstAvailable_
+    // `platformBackendType`: _enum PlatformBackendType, default=PlatformBackendType::FirstAvailable_
     // Select the wanted platform backend type between `Sdl`, `Glfw`.
     // if `FirstAvailable`, Glfw will be preferred over Sdl when both are available.
     // Only useful when multiple backend are compiled and available.
-    // (for compatibility with older versions, you can use BackendType instead of PlatformBackendType)
     PlatformBackendType platformBackendType = PlatformBackendType::FirstAvailable;
 
     // `renderingBackendType`: _enum RenderingBackendType, default=RenderingBackendType::FirstAvailable_
@@ -195,11 +194,6 @@ struct RunnerParams
     // Set the application refresh rate
     // (only used on emscripten: 0 stands for "let the app or the browser decide")
     int emscripten_fps = 0;
-
-    // --------------- Legacy -------------------`
-#ifndef HELLOIMGUI_DISABLE_OBSOLETE_BACKEND
-    PlatformBackendType& backendType = platformBackendType; // a synonym, for backward compatibility
-#endif
 };
 ```
 
@@ -209,7 +203,7 @@ struct RunnerParams
 ```cpp
 
 // You can select the platform backend type (SDL, GLFW) and the rendering backend type
-// via RunnerParams.backendType and RunnerParams.renderingBackendType.
+// via RunnerParams.platformBackendType and RunnerParams.renderingBackendType.
 
 // Platform backend type (SDL, GLFW)
 // They are listed in the order of preference when FirstAvailable is selected.
@@ -220,10 +214,6 @@ enum class PlatformBackendType
     Sdl,
 };
 
-#ifndef HELLOIMGUI_DISABLE_OBSOLETE_BACKEND
-using BackendType = PlatformBackendType; // for backward compatibility
-#endif
-
 // Rendering backend type (OpenGL3, Metal, Vulkan, DirectX11, DirectX12)
 // They are listed in the order of preference when FirstAvailable is selected.
 enum class RendererBackendType
diff --git a/src/hello_imgui/doc_params.src.md b/src/hello_imgui/doc_params.src.md
index 734861c6..cc273de7 100644
--- a/src/hello_imgui/doc_params.src.md
+++ b/src/hello_imgui/doc_params.src.md
@@ -28,7 +28,7 @@ See [runner_params.h](https://github.com/pthom/hello_imgui/blob/master/src/hello
 
 
 ```cpp
-@import "runner_params.h" {md_id=BackendType}
+@import "runner_params.h" {md_id=PlatformBackendType}
 ```
 
 
diff --git a/src/hello_imgui/internal/backend_impls/runner_factory.cpp b/src/hello_imgui/internal/backend_impls/runner_factory.cpp
index 50a11f2f..d4572a85 100644
--- a/src/hello_imgui/internal/backend_impls/runner_factory.cpp
+++ b/src/hello_imgui/internal/backend_impls/runner_factory.cpp
@@ -38,7 +38,7 @@ void ChooseBackendTypesIfSelectedAsFirstAvailable(RunnerParams* runnerParams)
 std::unique_ptr<AbstractRunner> FactorRunner(RunnerParams& params)
 {
     ChooseBackendTypesIfSelectedAsFirstAvailable(&params);
-    if(params.backendType == BackendType::Glfw)
+    if (params.platformBackendType == PlatformBackendType::Glfw)
     {
         #ifdef HELLOIMGUI_USE_GLFW3
             return std::make_unique<RunnerGlfw3>(params);
@@ -46,7 +46,7 @@ std::unique_ptr<AbstractRunner> FactorRunner(RunnerParams& params)
             return nullptr;
         #endif
     }
-    else if (params.backendType == BackendType::Sdl)
+    else if (params.platformBackendType == PlatformBackendType::Sdl)
     {
         #if defined(__EMSCRIPTEN__)
             return std::make_unique<RunnerSdlEmscripten>(params);
diff --git a/src/hello_imgui/runner_params.h b/src/hello_imgui/runner_params.h
index d93c275e..f76199d8 100644
--- a/src/hello_imgui/runner_params.h
+++ b/src/hello_imgui/runner_params.h
@@ -8,17 +8,15 @@
 #include "hello_imgui/dpi_aware.h"
 #include <vector>
 
-// #define HELLOIMGUI_DISABLE_OBSOLETE_BACKEND
-
 namespace HelloImGui
 {
 
 // --------------------------------------------------------------------------------------------------------------------
 
-// @@md#BackendType
+// @@md#PlatformBackendType
 
 // You can select the platform backend type (SDL, GLFW) and the rendering backend type
-// via RunnerParams.backendType and RunnerParams.renderingBackendType.
+// via RunnerParams.platformBackendType and RunnerParams.renderingBackendType.
 
 // Platform backend type (SDL, GLFW)
 // They are listed in the order of preference when FirstAvailable is selected.
@@ -29,10 +27,6 @@ enum class PlatformBackendType
     Sdl,
 };
 
-#ifndef HELLOIMGUI_DISABLE_OBSOLETE_BACKEND
-using BackendType = PlatformBackendType; // for backward compatibility
-#endif
-
 // Rendering backend type (OpenGL3, Metal, Vulkan, DirectX11, DirectX12)
 // They are listed in the order of preference when FirstAvailable is selected.
 enum class RendererBackendType
@@ -186,11 +180,10 @@ struct RunnerParams
     // Options for the renderer backend
     RendererBackendOptions rendererBackendOptions;
 
-    // `backendType`: _enum BackendType, default=PlatformBackendType::FirstAvailable_
+    // `platformBackendType`: _enum PlatformBackendType, default=PlatformBackendType::FirstAvailable_
     // Select the wanted platform backend type between `Sdl`, `Glfw`.
     // if `FirstAvailable`, Glfw will be preferred over Sdl when both are available.
     // Only useful when multiple backend are compiled and available.
-    // (for compatibility with older versions, you can use BackendType instead of PlatformBackendType)
     PlatformBackendType platformBackendType = PlatformBackendType::FirstAvailable;
 
     // `renderingBackendType`: _enum RenderingBackendType, default=RenderingBackendType::FirstAvailable_
@@ -263,11 +256,6 @@ struct RunnerParams
     // Set the application refresh rate
     // (only used on emscripten: 0 stands for "let the app or the browser decide")
     int emscripten_fps = 0;
-
-    // --------------- Legacy -------------------`
-#ifndef HELLOIMGUI_DISABLE_OBSOLETE_BACKEND
-    PlatformBackendType& backendType = platformBackendType; // a synonym, for backward compatibility
-#endif
 };
 // @@md