diff --git a/src/xrt/state_trackers/oxr/oxr_instance.c b/src/xrt/state_trackers/oxr/oxr_instance.c
index 37c5479b3..e0071cd53 100644
--- a/src/xrt/state_trackers/oxr/oxr_instance.c
+++ b/src/xrt/state_trackers/oxr/oxr_instance.c
@@ -355,7 +355,7 @@ oxr_instance_create(struct oxr_logger *log,
 	void *mod = dlopen("librenderdoc.so", RTLD_NOW | RTLD_NOLOAD);
 	if (mod) {
 		pRENDERDOC_GetAPI RENDERDOC_GetAPI = (pRENDERDOC_GetAPI)dlsym(mod, "RENDERDOC_GetAPI");
-		int ret = RENDERDOC_GetAPI(eRENDERDOC_API_Version_1_5_0, (void **)&inst->rdoc_api);
+		XRT_MAYBE_UNUSED int ret = RENDERDOC_GetAPI(eRENDERDOC_API_Version_1_5_0, (void **)&inst->rdoc_api);
 		assert(ret == 1);
 	}
 #endif
diff --git a/src/xrt/targets/gui/gui_sdl2_imgui.c b/src/xrt/targets/gui/gui_sdl2_imgui.c
index a98eef598..67d47b94c 100644
--- a/src/xrt/targets/gui/gui_sdl2_imgui.c
+++ b/src/xrt/targets/gui/gui_sdl2_imgui.c
@@ -16,6 +16,7 @@
 
 #include "ogl/ogl_api.h"
 #include "gui/gui_imgui.h"
+#include "xrt/xrt_compiler.h"
 
 #include "gui_sdl2.h"
 
@@ -55,7 +56,7 @@ gui_sdl2_imgui_loop(struct sdl2_program *p)
 	ImGuiIO *io = igGetIO();
 
 	// Make window layout file "imgui.ini" live in config dir
-	int res = u_file_get_path_in_config_dir("imgui.ini", p->layout_file, sizeof(p->layout_file));
+	XRT_MAYBE_UNUSED int res = u_file_get_path_in_config_dir("imgui.ini", p->layout_file, sizeof(p->layout_file));
 	assert(res > 0);
 	io->IniFilename = p->layout_file;
 
diff --git a/src/xrt/targets/openxr/oxr_sdl2_hack.c b/src/xrt/targets/openxr/oxr_sdl2_hack.c
index 886b8c4be..a0a44b756 100644
--- a/src/xrt/targets/openxr/oxr_sdl2_hack.c
+++ b/src/xrt/targets/openxr/oxr_sdl2_hack.c
@@ -7,6 +7,7 @@
  */
 
 #include "util/u_file.h"
+#include "xrt/xrt_compiler.h"
 #include "xrt/xrt_instance.h"
 #include "xrt/xrt_config_have.h"
 #include "xrt/xrt_config_drivers.h"
@@ -145,7 +146,7 @@ sdl2_loop(struct sdl2_program *p)
 	ImGuiIO *io = igGetIO();
 
 	// Make window layout file "imgui.ini" live in config dir
-	int res = u_file_get_path_in_config_dir("imgui.ini", p->layout_file, sizeof(p->layout_file));
+	XRT_MAYBE_UNUSED int res = u_file_get_path_in_config_dir("imgui.ini", p->layout_file, sizeof(p->layout_file));
 	assert(res > 0);
 	io->IniFilename = p->layout_file;