1 files changed, 1 insertions, 1 deletions

diff --git a/contrib/infback9/infback9.c b/contrib/infback9/infback9.c
index 3691d4a..05fb3e3 100644
--- a/contrib/infback9/infback9.c
+++ b/contrib/infback9/infback9.c
@@ -222,7 +222,7 @@ out_func out;
 void FAR *out_desc;
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *next;    /* next input */
+    z_const unsigned char FAR *next;    /* next input */
     unsigned char FAR *put;     /* next output */
     unsigned have;              /* available input */
     unsigned long left;         /* available output */