diff --git a/lzw-lib.c b/lzw-lib.c
index 004cd6cd88783e96226f3f3b53abda6eeb3f079a..38ecd30a3ed38605d2cb752efb66dc8ecb4861c6 100644
--- a/lzw-lib.c
+++ b/lzw-lib.c
@@ -234,7 +234,6 @@ int lzw_decompress (void (*dst)(int), int (*src)(void))
 
     while (1) {
         int code_bits = next < 512 ? 9 : (next < 1024 ? 10 : (next < 2048 ? 11 : 12) ), code;
-        int extras = (1 << (code_bits + 1)) - next - 1;
 
         #define TOP_BITMASK  (((1 << code_bits) - 1) << (bits - code_bits) )
         #define BOTTOM_BITMASK ((1 << (bits - code_bits)) - 1)