1 files changed, 1 insertions, 1 deletions
diff --git a/proto.h b/proto.h
index 6aafbb4..899eec8 100644
--- a/proto.h
+++ b/proto.h
@@ -829,4 +829,4 @@ void srand48(long);
 long lrand48(void);
 #endif
 
-extern char *base64_encode(const unsigned char *src, int len);
+extern char *base64_encode(const unsigned char *src, size_t len);