diff --git a/src/x-list.h b/src/x-list.h
index bb85c02..059c88b 100644
--- a/src/x-list.h
+++ b/src/x-list.h
@@ -39,7 +39,7 @@
 #endif
 
 #ifndef X_EXTERN
-# define X_EXTERN __private_extern__
+# define X_EXTERN extern
 #endif
 
 X_EXTERN void X_PFX (list_free_1) (x_list *node);