badge: try relative path
diff --git a/README.md b/README.md
index 506166c..9577ec9 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![Build status](./workflows/bios-build/badge.svg)
+![Build status](../../workflows/bios-build/badge.svg)
 
 A simple x86 firmware that can boot Linux.