diff --git a/BasicSyntax.v b/BasicSyntax.v
index 1948495..37bc3b0 100644
--- a/BasicSyntax.v
+++ b/BasicSyntax.v
@@ -52,7 +52,7 @@ Module ArithWithConstants.
     end.
 
   Compute depth ex1.
-  Compute size ex2.
+  Compute depth ex2.
 
   (* Our first proof!
    * Size is an upper bound on depth. *)
diff --git a/BasicSyntax_template.v b/BasicSyntax_template.v
index b52c393..1d15b02 100644
--- a/BasicSyntax_template.v
+++ b/BasicSyntax_template.v
@@ -32,7 +32,7 @@ Fixpoint depth (e : arith) : nat :=
   end.
 
 Compute depth ex1.
-Compute size ex2.
+Compute depth ex2.
 
 (* Our first proof!
  * Size is an upper bound on depth. *)