diff --git a/.travis.yml b/.travis.yml
index 46305a731..129244d26 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,6 @@ env:
 matrix:
   allow_failures:
     - php: hhvm
-    - php: nightly
 
   include:
     - php: 5.4
@@ -38,8 +37,6 @@ matrix:
       env: DB=MYSQL BEHAT_TEST=1
     - php: 5.3
       env: DB=MYSQL
-    - php: nightly
-      env: DB=MYSQL
     - php: hhvm
       env: DB=MYSQL
 
diff --git a/admin/code/ModelAdmin.php b/admin/code/ModelAdmin.php
index e2b91e185..3f35a7d2e 100644
--- a/admin/code/ModelAdmin.php
+++ b/admin/code/ModelAdmin.php
@@ -354,7 +354,7 @@ abstract class ModelAdmin extends LeftAndMain {
 			$specRelations->push(new ArrayData(array('Name' => $name, 'Description' => $desc)));
 		}
 		$specHTML = $this->customise(array(
-			'ClassName' => str_replace('\\', '_', $className),
+			'ClassName' => $this->sanitiseClassName($this->modelClass),
 			'ModelName' => Convert::raw2att($modelName),
 			'Fields' => $specFields,
 			'Relations' => $specRelations,