diff --git a/morpheus-graphql-code-gen-utils.cabal b/morpheus-graphql-code-gen-utils.cabal
--- a/morpheus-graphql-code-gen-utils.cabal
+++ b/morpheus-graphql-code-gen-utils.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           morpheus-graphql-code-gen-utils
-version:        0.24.0
+version:        0.24.1
 synopsis:       Morpheus GraphQL CLI
 description:    code generator for Morpheus GraphQL
 category:       web, graphql, cli
diff --git a/src/Data/Morpheus/CodeGen/Internal/AST.hs b/src/Data/Morpheus/CodeGen/Internal/AST.hs
--- a/src/Data/Morpheus/CodeGen/Internal/AST.hs
+++ b/src/Data/Morpheus/CodeGen/Internal/AST.hs
@@ -204,7 +204,10 @@
         <> vsep (map renderImport $ sortWith fst imports)
         <> line
         <> line
-        <> vsep (map pretty types)
+        <> vsep (filter notEmpty $ map pretty types)
+
+notEmpty :: Doc a -> Bool
+notEmpty x = not $ null (show x :: String)
 
 renderExtension :: Text -> Doc ann
 renderExtension txt