diff --git a/sintrastes/ideas.md b/sintrastes/ideas.md
index ca9ec3d..1597a0f 100644
--- a/sintrastes/ideas.md
+++ b/sintrastes/ideas.md
@@ -1,7 +1,7 @@
 Algebraic Data Types
 ====================
 
-While oftentimes Python's classes in built in data types get by, I think that Python would be enriched with the addition of a nice syntax for algebraic data types.
+While oftentimes Python's classes and built in data types get by, I think that Python would be enriched with the addition of a nice syntax for algebraic data types.
 
 This new syntax might look somewhat like this: