diff --git a/lib/SimpleSAML/SessionHandlerPHP.php b/lib/SimpleSAML/SessionHandlerPHP.php
index dd689d05578df25e136f96f77339dc4bafe1f1e1..6907938a0f16347f6577591dae68a7793e9de1bc 100644
--- a/lib/SimpleSAML/SessionHandlerPHP.php
+++ b/lib/SimpleSAML/SessionHandlerPHP.php
@@ -208,7 +208,7 @@ class SimpleSAML_SessionHandlerPHP extends SimpleSAML_SessionHandler
             throw new SimpleSAML_Error_Exception('Session start with secure cookie not allowed on http.');
         }
 
-       $this->sessionStart();
+        $this->sessionStart();
         return session_id();
     }