diff --git a/content/concepts/architecture.md b/content/concepts/architecture.md
index 56f250f7..8d2e6976 100644
--- a/content/concepts/architecture.md
+++ b/content/concepts/architecture.md
@@ -7,7 +7,7 @@ description: Simplicity and Interoperability via a Datatokens Core
 
 Here is the Ocean architecture.
 
-![Ocean Protocol tools architecture](images/architecture.PNG)
+![Ocean Protocol tools architecture](images/architecture.png)
 
 Here’s an overview of the figure.
 
diff --git a/content/concepts/images/architecture.PNG b/content/concepts/images/architecture.png
similarity index 100%
rename from content/concepts/images/architecture.PNG
rename to content/concepts/images/architecture.png