diff --git a/docs/userguide/getting-started.md b/docs/userguide/getting-started.md
index 49b429bdd..075a111ca 100644
--- a/docs/userguide/getting-started.md
+++ b/docs/userguide/getting-started.md
@@ -116,7 +116,7 @@ Looks like we need to define the function we want to test.
 create or replace function betwnstr( a_string varchar2, a_start_pos integer, a_end_pos integer ) return varchar2
 is
 begin
-  return substr( a_string, l_start_pos, a_end_pos - a_start_pos );
+  return substr( a_string, a_start_pos, a_end_pos - a_start_pos );
 end;
 /
 ```
@@ -149,7 +149,7 @@ The function returned string one character short, so we need to add 1 to the sub
 create or replace function betwnstr( a_string varchar2, a_start_pos integer, a_end_pos integer ) return varchar2 
 is
 begin
-  return substr( a_string, l_start_pos, a_end_pos - a_start_pos + 1 );
+  return substr( a_string, a_start_pos, a_end_pos - a_start_pos + 1 );
 end;
 /
 ```