1 files changed, 1 insertions, 1 deletions
diff --git a/zlib.h b/zlib.h
index 6728d89..3121b0a 100644
--- a/zlib.h
+++ b/zlib.h
@@ -1298,7 +1298,7 @@ ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
    error.
 */
 
-ZEXTERN int ZEXPORTVA gzprintf ON((gzFile file, const char *format, ...));
+ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
 /*
      Converts, formats, and writes the arguments to the compressed file under
    control of the format string, as in fprintf.  gzprintf returns the number of