1 files changed, 2 insertions, 1 deletions
diff --git a/git-zlib.c b/git-zlib.c
index 2e973320c2..651dd9e07c 100644
--- a/git-zlib.c
+++ b/git-zlib.c
@@ -59,7 +59,8 @@ static void zlib_post_call(git_zstream *s)
 
 	s->total_out = s->z.total_out;
 	s->total_in = s->z.total_in;
-	s->next_in = s->z.next_in;
+	/* zlib-ng marks `next_in` as `const`, so we have to cast it away. */
+	s->next_in = (unsigned char *) s->z.next_in;
 	s->next_out = s->z.next_out;
 	s->avail_in -= bytes_consumed;
 	s->avail_out -= bytes_produced;