diff --git a/README.md b/README.md
index c4ef371..017c3a7 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ for label in site_labels:
     cif.plot_polyhedron(label, is_displayed=True)
 ```
 
-![Polyhedron generation](docs/assets/img/ErCoIn-polyhedron.pngg)
+![Polyhedron generation](docs/assets/img/ErCoIn-polyhedron.png)
 
 ### Example Usage 2 - sort