diff --git a/src/libsodium/include/sodium/private/implementations.h b/src/libsodium/include/sodium/private/implementations.h
index 85c52d7c..7790e932 100644
--- a/src/libsodium/include/sodium/private/implementations.h
+++ b/src/libsodium/include/sodium/private/implementations.h
@@ -1,19 +1,6 @@
 #ifndef implementations_H
 #define implementations_H
 
-#include "export.h"
-
-#ifdef __cplusplus
-# ifdef __GNUC__
-#  pragma GCC diagnostic ignored "-Wlong-long"
-# endif
-extern "C" {
-#endif
-
 int _crypto_pwhash_argon2_pick_best_implementation(void);
 
-#ifdef __cplusplus
-}
-#endif
-
 #endif