diff --git a/doc/common-problems.md b/doc/common-problems.md
index b9e64e2..15f4eca 100644
--- a/doc/common-problems.md
+++ b/doc/common-problems.md
@@ -225,5 +225,5 @@ application is the 404 page:
 
 _with this kind of setup it's necessary to explicitly define the php filename_.
 
-In this way after nginx has tried to server a (none existant) static file, it
+In this way after nginx has tried to serve a (none existant) static file, it
 will pass the request to the php application successfully.