diff --git a/manifests/api.pp b/manifests/api.pp
index a532e84f..93d982a3 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -397,6 +397,13 @@ class glance::api(
     )
   }
 
+  if $enabled_import_methods != $::os_service_default {
+    # This option is a ListOpt that requires explicit brackets.
+    $enabled_import_methods_real = sprintf('[%s]', join(any2array($enabled_import_methods), ','))
+  } else {
+    $enabled_import_methods_real = $enabled_import_methods
+  }
+
   # basic service config
   glance_api_config {
     'DEFAULT/bind_host':               value => $bind_host;
@@ -409,7 +416,7 @@ class glance::api(
     'DEFAULT/scrub_time':              value => $scrub_time;
     'DEFAULT/delayed_delete':          value => $delayed_delete;
     'DEFAULT/image_cache_dir':         value => $image_cache_dir;
-    'DEFAULT/enabled_import_methods':  value => $enabled_import_methods;
+    'DEFAULT/enabled_import_methods':  value => $enabled_import_methods_real;
     'DEFAULT/node_staging_uri':        value => $node_staging_uri;
     'DEFAULT/image_member_quota':      value => $image_member_quota;
     'DEFAULT/enable_v1_api':           value => $enable_v1_api;
diff --git a/spec/classes/glance_api_spec.rb b/spec/classes/glance_api_spec.rb
index 335ef1fc..26cd74f9 100644
--- a/spec/classes/glance_api_spec.rb
+++ b/spec/classes/glance_api_spec.rb
@@ -132,7 +132,6 @@ describe 'glance::api' do
             'delayed_delete',
             'scrub_time',
             'image_cache_dir',
-            'enabled_import_methods',
             'node_staging_uri',
             'image_member_quota',
             'enable_v1_api',
@@ -144,6 +143,12 @@ describe 'glance::api' do
           end
         end
 
+        it 'is_expected.to lay down default enabled_import_methods config' do
+          # Verify brackets "[]" are added to satisfy the ListOpt syntax.
+          is_expected.to contain_glance_api_config("DEFAULT/enabled_import_methods").with_value(
+                           "[%s]" % param_hash[:enabled_import_methods])
+        end
+
         it 'is_expected.to lay down default cache config' do
           [
             'registry_host',