1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rc4.c b/lib/rc4.c
index cada3e1..565b3aa 100644
--- a/lib/rc4.c
+++ b/lib/rc4.c
@@ -20,7 +20,7 @@
 
 #include "rc4.h"
 
-void rc4_setup( struct rc4_state *s, unsigned char *key,  int length )
+void rc4_setup( struct rc4_state *s, const unsigned char *key,  int length )
 {
     int i, j, k, *m, a;