diff --git a/OpenCL/inc_truecrypt_xts.cl b/OpenCL/inc_truecrypt_xts.cl
index eab39e80e..6bf6684d2 100644
--- a/OpenCL/inc_truecrypt_xts.cl
+++ b/OpenCL/inc_truecrypt_xts.cl
@@ -150,7 +150,7 @@ void twofish256_decrypt_xts_next (const u32 *in, u32 *out, u32 *T, u32 *sk, u32
 
 // 512 bit
 
-int verify_header_aes (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
+int verify_header_aes (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
 {
   u32 ks_aes[60];
 
@@ -206,7 +206,7 @@ int verify_header_aes (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *u
   return 1;
 }
 
-int verify_header_serpent (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2)
+int verify_header_serpent (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2)
 {
   u32 ks_serpent[140];
 
@@ -262,7 +262,7 @@ int verify_header_serpent (__global tc_t *esalt_bufs, const u32 *ukey1, const u3
   return 1;
 }
 
-int verify_header_twofish (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2)
+int verify_header_twofish (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2)
 {
   u32 sk_twofish[4];
   u32 lk_twofish[40];
@@ -321,7 +321,7 @@ int verify_header_twofish (__global tc_t *esalt_bufs, const u32 *ukey1, const u3
 
 // 1024 bit
 
-int verify_header_aes_twofish (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
+int verify_header_aes_twofish (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
 {
   u32 ks_aes[60];
 
@@ -384,7 +384,7 @@ int verify_header_aes_twofish (__global tc_t *esalt_bufs, const u32 *ukey1, cons
   return 1;
 }
 
-int verify_header_serpent_aes (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
+int verify_header_serpent_aes (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
 {
   u32 ks_serpent[140];
   u32 ks_aes[60];
@@ -445,7 +445,7 @@ int verify_header_serpent_aes (__global tc_t *esalt_bufs, const u32 *ukey1, cons
   return 1;
 }
 
-int verify_header_twofish_serpent (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4)
+int verify_header_twofish_serpent (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4)
 {
   u32 sk_twofish[4];
   u32 lk_twofish[40];
@@ -510,7 +510,7 @@ int verify_header_twofish_serpent (__global tc_t *esalt_bufs, const u32 *ukey1,
 
 // 1536 bit
 
-int verify_header_aes_twofish_serpent (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, const u32 *ukey5, const u32 *ukey6, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
+int verify_header_aes_twofish_serpent (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, const u32 *ukey5, const u32 *ukey6, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
 {
   u32 ks_aes[60];
 
@@ -579,7 +579,7 @@ int verify_header_aes_twofish_serpent (__global tc_t *esalt_bufs, const u32 *uke
   return 1;
 }
 
-int verify_header_serpent_twofish_aes (__global tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, const u32 *ukey5, const u32 *ukey6, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
+int verify_header_serpent_twofish_aes (__global const tc_t *esalt_bufs, const u32 *ukey1, const u32 *ukey2, const u32 *ukey3, const u32 *ukey4, const u32 *ukey5, const u32 *ukey6, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
 {
   u32 ks_serpent[140];