diff --git a/docs/philosophy.md b/docs/philosophy.md
index afdad982b..13960e962 100644
--- a/docs/philosophy.md
+++ b/docs/philosophy.md
@@ -14,7 +14,7 @@ discusses the [conventions] used in this documentation.
   – let Material for MkDocs do the heavy lifting for you.
 
 - __Works on all devices__: Serve your documentation with confidence – the 
-  underling layout automatically adapts to perfectly fit the available screen 
+  underlying layout automatically adapts to perfectly fit the available screen 
   estate, no matter the type or size of the viewing device.
 
 - __Made to measure__: Change the colors, fonts, language, icons, logo and much