diff --git a/libweston/renderer-gl/gl-renderer.c b/libweston/renderer-gl/gl-renderer.c
index ecdbe5455..df9867def 100644
--- a/libweston/renderer-gl/gl-renderer.c
+++ b/libweston/renderer-gl/gl-renderer.c
@@ -734,7 +734,7 @@ timeline_render_point_handler(int fd, uint32_t mask, void *data)
 			       " - end: %" PRId64 ".%09ld - elapsed: %.2f us\n",
 			       (int64_t) begin.tv_sec, begin.tv_nsec,
 			       (int64_t) end.tv_sec, end.tv_nsec,
-			       (float) (elapsed / 1000));
+			       (float) (elapsed / 1000.0f));
 
 
 	}