diff --git a/lib/SimpleSAML/ModifiedInfo.php b/lib/SimpleSAML/ModifiedInfo.php
deleted file mode 100644
index 9eedc834c02e90e361f9549f5f5ddc2323ede1ae..0000000000000000000000000000000000000000
--- a/lib/SimpleSAML/ModifiedInfo.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-/**
- * The ModifiedInfo interface allows an object to export information about
- * whether it has been modified since it was deserialized or not.
- */
-interface SimpleSAML_ModifiedInfo {
-
-	/**
-	 * This function is used to determine if this object has changed
-	 * since it was deserialized.
-	 *
-	 * @return TRUE if it has changed, FALSE if not.
-	 */
-	public function isModified();
-
-}
-?>
\ No newline at end of file