1 files changed, 1 insertions, 1 deletions
diff --git a/delta.h b/delta.h
index df97ff84f..ccc0c9ece 100644
--- a/delta.h
+++ b/delta.h
@@ -4,7 +4,7 @@
 /* handling of delta buffers */
 extern void *diff_delta(void *from_buf, unsigned long from_size,
 			void *to_buf, unsigned long to_size,
-		        unsigned long *delta_size);
+		        unsigned long *delta_size, unsigned long max_size);
 extern void *patch_delta(void *src_buf, unsigned long src_size,
 			 void *delta_buf, unsigned long delta_size,
 			 unsigned long *dst_size);