diff --git a/reactos/sdk/include/ndk/iofuncs.h b/reactos/sdk/include/ndk/iofuncs.h
index 4c1073b4a09..a141883381f 100644
--- a/reactos/sdk/include/ndk/iofuncs.h
+++ b/reactos/sdk/include/ndk/iofuncs.h
@@ -25,6 +25,10 @@ Author:
 #include <umtypes.h>
 #include <iotypes.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //
 // I/O Functions
 //
@@ -1064,6 +1068,10 @@ ZwWriteFileGather(
     _In_opt_ PULONG Key
 );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif