diff --git a/include/ddk/ntddk.h b/include/ddk/ntddk.h
index 96c0aa5530a..74346d4d662 100644
--- a/include/ddk/ntddk.h
+++ b/include/ddk/ntddk.h
@@ -51,6 +51,9 @@
 #include <basetyps.h> // FIXME
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 //
 // GUID and UUID
@@ -689,5 +692,9 @@ MmGetPhysicalAddress(
 /* Windows Device Driver Kit */
 #include "winddk.h"
 
+#ifdef __cplusplus
+}
+#endif
+
 
 #endif /* _NTDDK_ */