diff --git a/src/experimental/filament/CMakeLists.txt b/src/experimental/filament/CMakeLists.txt
index c09455a9..99639d24 100644
--- a/src/experimental/filament/CMakeLists.txt
+++ b/src/experimental/filament/CMakeLists.txt
@@ -51,8 +51,6 @@ target_sources(${MUJOCO_FILAMENT_TARGET_NAME}
         filament/scene_view.h
         filament/texture.cc
         filament/texture.h
-        compat/imgui_bridge.cc
-        compat/imgui_bridge.h
         compat/model_objects.cc
         compat/model_objects.h
         compat/scene_bridge.cc
diff --git a/src/experimental/platform/CMakeLists.txt b/src/experimental/platform/CMakeLists.txt
index 4bf46f26..6df6cf4f 100644
--- a/src/experimental/platform/CMakeLists.txt
+++ b/src/experimental/platform/CMakeLists.txt
@@ -44,6 +44,8 @@ target_sources(${MUJOCO_PLATFORM_TARGET_NAME}
         ux/gui.h
         ux/gui_spec.cc
         ux/gui_spec.h
+        ux/imgui_bridge.cc
+        ux/imgui_bridge.h
         ux/imgui_widgets.cc
         ux/imgui_widgets.h
         ux/interaction.cc