diff --git a/render/gles2/renderer.c b/render/gles2/renderer.c

index 9fe934f7..9662d4ee 100644

--- a/render/gles2/renderer.c

+++ b/render/gles2/renderer.c

@@ -176,7 +176,7 @@ static bool gles2_bind_buffer(struct wlr_renderer *wlr_renderer,

 		assert(wlr_egl_is_current(renderer->egl));

 		push_gles2_debug(renderer);

-		glFlush();

+		glFinish();

 		glBindFramebuffer(GL_FRAMEBUFFER, 0);

 		pop_gles2_debug(renderer);

diff --git a/types/output/render.c b/types/output/render.c

index 2e38919a..97f78608 100644

--- a/types/output/render.c

+++ b/types/output/render.c

@@ -240,22 +240,7 @@ bool output_pick_format(struct wlr_output *output,

 }

 uint32_t wlr_output_preferred_read_format(struct wlr_output *output) {

-	struct wlr_renderer *renderer = output->renderer;

-	assert(renderer != NULL);

-

-	if (!renderer->impl->preferred_read_format || !renderer->impl->read_pixels) {

-		return DRM_FORMAT_INVALID;

-	}

-

-	if (!wlr_output_attach_render(output, NULL)) {

-		return false;

-	}

-

-	uint32_t fmt = renderer->impl->preferred_read_format(renderer);

-

-	output_clear_back_buffer(output);

-

-	return fmt;

+	return DRM_FORMAT_XRGB8888;

 }

 struct wlr_render_pass *wlr_output_begin_render_pass(struct wlr_output *output,