diff --git a/README.md b/README.md
index 097bdc1..b07834a 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Run `sbt package`, then add
 
 ## Available extensions
 
-### Schema diff
+### Data diff
 
 `refs_data_diff` is a Spark SQL table-valued function.  The expression