diff --git a/schemars/Cargo.toml b/schemars/Cargo.toml
index 1c39db8..7f11d1f 100644
--- a/schemars/Cargo.toml
+++ b/schemars/Cargo.toml
@@ -2,14 +2,14 @@
 name = "schemars"
 description = "Generate JSON Schemas from Rust code"
 repository = "https://github.com/GREsau/schemars"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
 edition = "2018"
 license = "MIT"
 keywords = ["rust", "json-schema", "serde"]
 
 [dependencies]
-schemars_derive = { version = "0.1.0", path = "../schemars_derive" }
+schemars_derive = { version = "0.1.2", path = "../schemars_derive" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 
diff --git a/schemars_derive/Cargo.toml b/schemars_derive/Cargo.toml
index af6f032..3f4b18c 100644
--- a/schemars_derive/Cargo.toml
+++ b/schemars_derive/Cargo.toml
@@ -2,7 +2,7 @@
 name = "schemars_derive"
 description = "Macros for #[derive(MakeSchema)], for use with schemars"
 repository = "https://github.com/GREsau/schemars"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
 edition = "2018"
 license = "MIT"
diff --git a/schemars_derive/src/lib.rs b/schemars_derive/src/lib.rs
index 9c47c6f..63c1cc1 100644
--- a/schemars_derive/src/lib.rs
+++ b/schemars_derive/src/lib.rs
@@ -70,7 +70,7 @@ pub fn derive_make_schema(input: proc_macro::TokenStream) -> proc_macro::TokenSt
             }
 
             fn make_schema(gen: &mut schemars::gen::SchemaGenerator) -> schemars::Result {
-                #schema
+                Ok(#schema)
             }
         };
     };
@@ -79,11 +79,11 @@ pub fn derive_make_schema(input: proc_macro::TokenStream) -> proc_macro::TokenSt
 
 fn wrap_schema_fields(schema_contents: TokenStream) -> TokenStream {
     quote! {
-        Ok(schemars::schema::Schema::Object(
+        schemars::schema::Schema::Object(
             schemars::schema::SchemaObject {
             #schema_contents
             ..Default::default()
-        }))
+        })
     }
 }
 
@@ -139,7 +139,11 @@ fn schema_for_external_tagged_enum(variants: &[Variant], cattrs: &attr::Containe
                 props.insert(#name.to_owned(), #sub_schema);
                 props
             },
-            required: vec![#name.to_owned()],
+            required: {
+                let mut required = schemars::Set::new();
+                required.insert(#name.to_owned());
+                required
+            },
         })
     }));
 
@@ -212,7 +216,7 @@ fn schema_for_struct(fields: &[Field], cattrs: &attr::Container) -> TokenStream
     let flattens = flat.iter().map(|f| {
         let ty = f.ty;
         quote_spanned! {f.original.span()=>
-            ?.flatten(<#ty>::make_schema(gen)?)
+            .flatten(<#ty>::make_schema(gen)?)?
         }
     });