diff --git a/clients/simple-egl.c b/clients/simple-egl.c
index 9d401f9..b0c0273 100644
--- a/clients/simple-egl.c
+++ b/clients/simple-egl.c
@@ -99,7 +99,7 @@ struct window {
 	struct ivi_surface *ivi_surface;
 	EGLSurface egl_surface;
 	struct wl_callback *callback;
-	int fullscreen, opaque, buffer_size, frame_sync;
+	int fullscreen, opaque, buffer_size, frame_sync, delay;
 	bool wait_for_configure;
 };
 
@@ -548,6 +548,7 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
 	} else {
 		eglSwapBuffers(display->egl.dpy, window->egl_surface);
 	}
+	usleep(window->delay);
 	window->frames++;
 }
 
@@ -828,6 +829,7 @@ usage(int error_code)
 		"  -o\tCreate an opaque surface\n"
 		"  -s\tUse a 16 bpp EGL config\n"
 		"  -b\tDon't sync to compositor redraw (eglSwapInterval 0)\n"
+		"  -d <us>\tBuffer swap delay in microseconds\n"
 		"  -h\tThis help text\n\n");
 
 	exit(error_code);
@@ -848,9 +850,12 @@ main(int argc, char **argv)
 	window.window_size = window.geometry;
 	window.buffer_size = 32;
 	window.frame_sync = 1;
+	window.delay = 0;
 
 	for (i = 1; i < argc; i++) {
-		if (strcmp("-f", argv[i]) == 0)
+		if (strcmp("-d", argv[i]) == 0 && i+1 < argc)
+			window.delay = atoi(argv[++i]);
+		else if (strcmp("-f", argv[i]) == 0)
 			window.fullscreen = 1;
 		else if (strcmp("-o", argv[i]) == 0)
 			window.opaque = 1;