diff --git a/docs/arbitrary.rst b/docs/arbitrary.rst
index 5fd253df6d..0536926d38 100644
--- a/docs/arbitrary.rst
+++ b/docs/arbitrary.rst
@@ -1,4 +1,4 @@
-Aribtrary Profiles
+Arbitrary Profiles
 ==================
 
 If none of the above classes seem appropriate, it is possible to define any arbitrary