diff --git a/types/scm.pp b/types/scm.pp
index 23b45620..6b494efc 100644
--- a/types/scm.pp
+++ b/types/scm.pp
@@ -1,10 +1,10 @@
 # @summary Rundeck scm type.
 type Rundeck::Scm = Struct[{
-    'import' => Struct[{
+    Optional['import'] => Struct[{
         'type'   => String[1],
         'config' => Hash[String[1], String],
     }],
-    'export' => Struct[{
+    Optional['export'] => Struct[{
         'type'   => String[1],
         'config' => Hash[String[1], String],
     }],