diff --git a/doc/source/devref/repo_structure.rst b/doc/source/devref/repo_structure.rst
index 3e4a419..b50e907 100644
--- a/doc/source/devref/repo_structure.rst
+++ b/doc/source/devref/repo_structure.rst
@@ -75,7 +75,7 @@ Current Repository Structure
   - proton-server code
 
     - Main entry point for proton-server process
-    - Uses particle generator from gluon package to generate the REST AP
+    - Uses particle generator from gluon package to generate the REST API
       from model files
     - Uses particle generator from gluon package to generate sqlalchemy database
       classes from model files