diff --git a/src/xrt/state_trackers/gui/CMakeLists.txt b/src/xrt/state_trackers/gui/CMakeLists.txt
index a42048f50..7c2202c50 100644
--- a/src/xrt/state_trackers/gui/CMakeLists.txt
+++ b/src/xrt/state_trackers/gui/CMakeLists.txt
@@ -8,7 +8,7 @@ add_library(
 	st_gui STATIC
 	gui_common.h
 	gui_imgui.h
-	gui_ogl.c
+	gui_ogl_sink.c
 	gui_prober.c
 	gui_scene.cpp
 	gui_scene_calibrate.c
diff --git a/src/xrt/state_trackers/gui/gui_ogl.c b/src/xrt/state_trackers/gui/gui_ogl_sink.c
similarity index 98%
rename from src/xrt/state_trackers/gui/gui_ogl.c
rename to src/xrt/state_trackers/gui/gui_ogl_sink.c
index d32d95476..3b8299e89 100644
--- a/src/xrt/state_trackers/gui/gui_ogl.c
+++ b/src/xrt/state_trackers/gui/gui_ogl_sink.c
@@ -1,8 +1,8 @@
-// Copyright 2019, Collabora, Ltd.
+// Copyright 2019-2023, Collabora, Ltd.
 // SPDX-License-Identifier: BSL-1.0
 /*!
  * @file
- * @brief  OpenGL functions to drive the gui.
+ * @brief  OpenGL sink functions.
  * @author Jakob Bornecrantz <jakob@collabora.com>
  * @author Moses Turner <moses@collabora.com>
  * @ingroup gui