diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index f066629..be8f24a 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -98,15 +98,15 @@ function rdf_get_namespaces() {
   $rdf_namespaces = &drupal_static(__FUNCTION__);
   if (!isset($rdf_namespaces)) {
     $rdf_namespaces = module_invoke_all('rdf_namespaces');
-    // module_invoke_all() uses array_merge_recursive() which might return nested
-    // arrays if several modules redefine the same prefix multiple times. We need
-    // to ensure the array of namespaces is flat and only contains strings as
-    // URIs.
+    // module_invoke_all() uses array_merge_recursive() which might return
+    // nested arrays if several modules redefine the same prefix multiple
+    // times. We need to ensure the array of namespaces is flat and only
+    // contains strings as URIs.
     foreach ($rdf_namespaces as $prefix => $uri) {
       if (is_array($uri)) {
         if (count(array_unique($uri)) == 1) {
-          // All namespaces declared for this prefix are the same, merge them all
-          // into a single namespace.
+          // All namespaces declared for this prefix are the same, merge them
+          // all into a single namespace.
           $rdf_namespaces[$prefix] = $uri[0];
         }
         else {