diff --git a/op_guide/update_matrix.md b/op_guide/update_matrix.md
index 16f6b33..9387a7f 100644
--- a/op_guide/update_matrix.md
+++ b/op_guide/update_matrix.md
@@ -16,7 +16,7 @@ We use the docker hub to store our images, if you are not `superboum` you must c
 
 So, from now we expact you have:
   - changed the `VERSION` value and `image` name/tag of `riot`
-	- changed the `VERSION` value and `image` name/tag of `synapse`
+  - changed the `VERSION` value and `image` name/tag of `synapse`
 
 You can now simply build and push the new images: