diff --git a/src/encode/base64.c b/src/encode/base64.c
index 0374d5a470c5f4984e0c676e2dcb7bff4d428247..9e5bb443cecd5c5bc59e667384064567e498d5a4 100644
--- a/src/encode/base64.c
+++ b/src/encode/base64.c
@@ -42,7 +42,7 @@
 static const char * base64alphabet = 
  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 
-int b64_decode(char *target, size_t tlen, const char *source size_t slen)
+int b64_decode(char *target, size_t tlen, const char *source, size_t slen)
 {
 	const char	*inp;
 	char	*outp;