1 files changed, 1 insertions, 1 deletions
diff --git a/intern.h b/intern.h
index 31bc5a049d..0fcdf5ac21 100644
--- a/intern.h
+++ b/intern.h
@@ -185,7 +185,7 @@ void rb_thread_atfork _((void));
 int eaccess _((const char*, int));
 VALUE rb_file_s_expand_path _((int, VALUE *));
 void rb_file_const _((const char*, VALUE));
-int rb_find_file_ext _((VALUE*, char**));
+int rb_find_file_ext _((VALUE*, const char* const*));
 VALUE rb_find_file _((VALUE));
 /* gc.c */
 void rb_gc_mark_locations _((VALUE*, VALUE*));