1 files changed, 2 insertions, 1 deletions

diff --git a/fs/cifs/cifsencrypt.h b/fs/cifs/cifsencrypt.h
index 152fa2dcfc6c..15d2ec006474 100644
--- a/fs/cifs/cifsencrypt.h
+++ b/fs/cifs/cifsencrypt.h
@@ -26,7 +26,8 @@
 extern void mdfour(unsigned char *out, unsigned char *in, int n);
 /* smbdes.c */
 extern void E_P16(unsigned char *p14, unsigned char *p16);
-extern void E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24);
+extern void E_P24(unsigned char *p21, const unsigned char *c8,
+                  unsigned char *p24);