diff --git a/docs/glossary.rst b/docs/glossary.rst
index 5a9014b..f2b9083 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -26,7 +26,7 @@
         in a Secure Partition.
 
     NSPE
-        Non Secure Processing Enviroment:
+        Non Secure Processing Environment:
         `PSA term`_. In TF-M this means non secure domain typically running an
         OS using services provided by TF-M.