diff --git a/cmd/ggraphqlc/extractor.go b/cmd/ggraphqlc/extractor.go
index 41ba78aafbf..691d5def4bd 100644
--- a/cmd/ggraphqlc/extractor.go
+++ b/cmd/ggraphqlc/extractor.go
@@ -87,6 +87,10 @@ func (e *extractor) extract() {
 	sort.Slice(e.Objects, func(i, j int) bool {
 		return strings.Compare(e.Objects[i].Name, e.Objects[j].Name) == -1
 	})
+
+	sort.Slice(e.Interfaces, func(i, j int) bool {
+		return strings.Compare(e.Interfaces[i].Name, e.Interfaces[j].Name) == -1
+	})
 }
 
 func (e *extractor) introspect() error {
@@ -258,6 +262,9 @@ func (e *extractor) buildType(t common.Type) kind {
 		case *schema.Union:
 			t := e.getType(val.Name)
 			t.Modifiers = modifiers
+			if t.Modifiers[len(t.Modifiers)-1] == modPtr {
+				t.Modifiers = t.Modifiers[0 : len(t.Modifiers)-1]
+			}
 
 			for _, implementor := range val.PossibleTypes {
 				t.Implementors = append(t.Implementors, e.getType(implementor.Name))
diff --git a/cmd/ggraphqlc/types.go b/cmd/ggraphqlc/types.go
index 65abbff3395..f87d34308e2 100644
--- a/cmd/ggraphqlc/types.go
+++ b/cmd/ggraphqlc/types.go
@@ -69,9 +69,13 @@ func (t kind) doWriteJson(val string, remainingMods []string, isPtr bool) string
 		return fmt.Sprintf("ec.json.%s(%s)", ucFirst(t.Name), val)
 
 	default:
-		if !isPtr {
+		needPtr := len(t.Implementors) == 0
+		if needPtr && !isPtr {
 			val = "&" + val
 		}
+		if !needPtr && isPtr {
+			val = "*" + val
+		}
 		return fmt.Sprintf("ec._%s(field.Selections, %s)", lcFirst(t.GraphQLName), val)
 	}
 }
diff --git a/example/starwars/gen/generated.go b/example/starwars/gen/generated.go
index 9c616107616..3f01a7dfcd2 100644
--- a/example/starwars/gen/generated.go
+++ b/example/starwars/gen/generated.go
@@ -149,7 +149,7 @@ func (ec *executionContext) _droid(sel []query.Selection, it *starwars.Droid) {
 			}
 			ec.json.BeginArray()
 			for _, val := range res {
-				ec._character(field.Selections, &val)
+				ec._character(field.Selections, val)
 			}
 			ec.json.EndArray()
 
@@ -239,7 +239,7 @@ func (ec *executionContext) _friendsConnection(sel []query.Selection, it *starwa
 			}
 			ec.json.BeginArray()
 			for _, val := range res {
-				ec._character(field.Selections, &val)
+				ec._character(field.Selections, val)
 			}
 			ec.json.EndArray()
 
@@ -269,7 +269,7 @@ func (ec *executionContext) _friendsEdge(sel []query.Selection, it *starwars.Fri
 		case "node":
 			ec.json.ObjectKey(field.Alias)
 			res := it.Node
-			ec._character(field.Selections, &res)
+			ec._character(field.Selections, res)
 
 		default:
 			panic("unknown field " + strconv.Quote(field.Name))
@@ -324,7 +324,7 @@ func (ec *executionContext) _human(sel []query.Selection, it *starwars.Human) {
 			}
 			ec.json.BeginArray()
 			for _, val := range res {
-				ec._character(field.Selections, &val)
+				ec._character(field.Selections, val)
 			}
 			ec.json.EndArray()
 
@@ -484,7 +484,7 @@ func (ec *executionContext) _query(sel []query.Selection, it *interface{}) {
 				ec.json.Null()
 				continue
 			}
-			ec._character(field.Selections, &res)
+			ec._character(field.Selections, res)
 
 		case "reviews":
 			ec.json.ObjectKey(field.Alias)
@@ -546,7 +546,7 @@ func (ec *executionContext) _query(sel []query.Selection, it *interface{}) {
 			}
 			ec.json.BeginArray()
 			for _, val := range res {
-				ec._searchResult(field.Selections, &val)
+				ec._searchResult(field.Selections, val)
 			}
 			ec.json.EndArray()
 
@@ -568,7 +568,7 @@ func (ec *executionContext) _query(sel []query.Selection, it *interface{}) {
 				ec.json.Null()
 				continue
 			}
-			ec._character(field.Selections, &res)
+			ec._character(field.Selections, res)
 
 		case "droid":
 			ec.json.ObjectKey(field.Alias)
@@ -1161,7 +1161,7 @@ func (ec *executionContext) ___Type(sel []query.Selection, it *introspection.Typ
 	ec.json.EndObject()
 }
 
-func (ec *executionContext) _searchResult(sel []query.Selection, it *starwars.SearchResult) {
+func (ec *executionContext) _character(sel []query.Selection, it starwars.Character) {
 	switch it := it.(type) {
 	case nil:
 		ec.json.Null()
@@ -1178,18 +1178,12 @@ func (ec *executionContext) _searchResult(sel []query.Selection, it *starwars.Se
 	case *starwars.Droid:
 		ec._droid(sel, it)
 
-	case starwars.Starship:
-		ec._starship(sel, &it)
-
-	case *starwars.Starship:
-		ec._starship(sel, it)
-
 	default:
 		panic(fmt.Errorf("unexpected type %T", it))
 	}
 }
 
-func (ec *executionContext) _character(sel []query.Selection, it starwars.Character) {
+func (ec *executionContext) _searchResult(sel []query.Selection, it starwars.SearchResult) {
 	switch it := it.(type) {
 	case nil:
 		ec.json.Null()
@@ -1206,6 +1200,12 @@ func (ec *executionContext) _character(sel []query.Selection, it starwars.Charac
 	case *starwars.Droid:
 		ec._droid(sel, it)
 
+	case starwars.Starship:
+		ec._starship(sel, &it)
+
+	case *starwars.Starship:
+		ec._starship(sel, it)
+
 	default:
 		panic(fmt.Errorf("unexpected type %T", it))
 	}