diff --git a/lib/zlib/trees.c b/lib/zlib/trees.c
index bb09554..d490704 100644
--- a/lib/zlib/trees.c
+++ b/lib/zlib/trees.c
@@ -420,7 +420,7 @@ local void init_block(s)
 
     s->dyn_ltree[END_BLOCK].Freq = 1;
     s->opt_len = s->static_len = 0L;
-    s->last_lit = s->matches = 0;
+    s->sym_next = s->matches = 0;
 }
 
 #define SMALLEST 1