diff --git a/gen/generator.go b/gen/generator.go
index 07e19fc..b6dc08e 100644
--- a/gen/generator.go
+++ b/gen/generator.go
@@ -222,8 +222,13 @@ func (g *Generator) pkgAlias(pkgPath string) string {
 
 // getType return the textual type name of given type that can be used in generated code.
 func (g *Generator) getType(t reflect.Type) string {
-	if t.Kind() == reflect.Ptr {
+	switch t.Kind() {
+	case reflect.Ptr:
 		return "*" + g.getType(t.Elem())
+	case reflect.Slice:
+		return "[]" + g.getType(t.Elem())
+	case reflect.Map:
+		return "map[" + g.getType(t.Key()) + "]" + g.getType(t.Elem())
 	}
 
 	if t.Name() == "" || t.PkgPath() == "" {