1 files changed, 1 insertions, 4 deletions

diff --git a/archival/gzip.c b/archival/gzip.c
index 8f1e4ff29..9e0bee815 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -2220,10 +2220,7 @@ int gzip_main(int argc UNUSED_PARAM, char **argv)
         opt >>= ENABLE_GUNZIP ? 7 : 5; /* drop cfv[dt]qn bits */
         if (opt == 0)
                 opt = 1 << 6; /* default: 6 */
-        /* Map 1..3 to 4 */
-        if (opt & 0x7)
-                opt |= 1 << 4;
-        opt = ffs(opt >> 3);
+        opt = ffs(opt >> 4); /* Maps -1..-4 to [0], -5 to [1] ... -9 to [5] */
         max_chain_length = 1 << gzip_level_config[opt].chain_shift;
         good_match       = gzip_level_config[opt].good;
         max_lazy_match   = gzip_level_config[opt].lazy2 * 2;