diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 5d2ec56..92baee5 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2406,7 +2406,7 @@
  *
  * Exists for audit and networking code.
  */
-static int smack_secctx_to_secid(char *secdata, u32 seclen, u32 *secid)
+static int smack_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 {
 	*secid = smack_to_secid(secdata);
 	return 0;