diff --git a/relational-data.Rmd b/relational-data.Rmd
index c1ce1b6..3bf6170 100644
--- a/relational-data.Rmd
+++ b/relational-data.Rmd
@@ -83,7 +83,7 @@ For nycflights13:
     its origin to its destination. What variables would you need? What tables
     would you need to combine?
 
-1.  I forgot to draw the a relationship between `weather` and `airports`.
+1.  I forgot to draw the relationship between `weather` and `airports`.
     What is the relationship and how should it appear in the diagram?
 
 1.  `weather` only contains information for the origin (NYC) airports. If