Use zip_XXX_t instead of struct zip_XXX or enum zip_XXX.
diff --git a/lib/zip_set_file_comment.c b/lib/zip_set_file_comment.c
index fffff46..d356693 100644
--- a/lib/zip_set_file_comment.c
+++ b/lib/zip_set_file_comment.c
@@ -39,7 +39,7 @@
 
 
 ZIP_EXTERN int
-zip_set_file_comment(struct zip *za, zip_uint64_t idx, const char *comment, int len)
+zip_set_file_comment(zip_t *za, zip_uint64_t idx, const char *comment, int len)
 {
     if (len < 0 || len > ZIP_UINT16_MAX) {
         zip_error_set(&za->error, ZIP_ER_INVAL, 0);