Index: /trunk/src/VBox/Runtime/common/string/base64.h
===================================================================
--- /trunk/src/VBox/Runtime/common/string/base64.h	(revision 84296)
+++ /trunk/src/VBox/Runtime/common/string/base64.h	(revision 84297)
@@ -24,4 +24,10 @@
  * terms and conditions of either the GPL or the CDDL or both.
  */
+
+#ifndef IPRT_INCLUDED_SRC_common_string_base64_h
+#define IPRT_INCLUDED_SRC_common_string_base64_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
 
 
@@ -83,2 +89,3 @@
 }
 
+#endif /* !IPRT_INCLUDED_SRC_common_string_base64_h */