diff --git a/docs/api_tools.rst b/docs/api_tools.rst
index f23cf71..8b46d2b 100644
--- a/docs/api_tools.rst
+++ b/docs/api_tools.rst
@@ -54,8 +54,8 @@ Combining sources
 
 .. autofunction:: averaged
 
-Artifical sources
-=================
+Artificial sources
+==================
 
 .. autofunction:: cos_values