diff --git a/crypto/rc2/rc2_skey.c b/crypto/rc2/rc2_skey.c
index 4953642..0150b0e 100644
--- a/crypto/rc2/rc2_skey.c
+++ b/crypto/rc2/rc2_skey.c
@@ -59,7 +59,7 @@
 #include <openssl/rc2.h>
 #include "rc2_locl.h"
 
-static unsigned char key_table[256]={
+static const unsigned char key_table[256]={
 	0xd9,0x78,0xf9,0xc4,0x19,0xdd,0xb5,0xed,0x28,0xe9,0xfd,0x79,
 	0x4a,0xa0,0xd8,0x9d,0xc6,0x7e,0x37,0x83,0x2b,0x76,0x53,0x8e,
 	0x62,0x4c,0x64,0x88,0x44,0x8b,0xfb,0xa2,0x17,0x9a,0x59,0xf5,