diff --git a/lib/igt_fb.c b/lib/igt_fb.c
index 5c92fac8..ce5a1025 100644
--- a/lib/igt_fb.c
+++ b/lib/igt_fb.c
@@ -411,7 +411,7 @@ igt_create_fb_with_bo_size(int fd, int width, int height,
 
 	bpp = igt_drm_format_to_bpp(format);
 
-	igt_debug("%s(width=%d, height=%d, format=0x%x [bpp=%d], tiling=%llx, size=%d\n",
+	igt_debug("%s(width=%d, height=%d, format=0x%x [bpp=%d], tiling=0x%"PRIx64", size=%d\n",
 		  __func__, width, height, format, bpp, tiling, bo_size);
 	do_or_die(create_bo_for_fb(fd, width, height, bpp, tiling, bo_size,
 				   &fb->gem_handle, &fb->size, &fb->stride));