--- misc/mc.menu.in.orig	2017-12-11 09:44:03.969877937 +0400
+++ misc/mc.menu.in	2017-12-11 09:51:56.835862807 +0400
@@ -242,7 +242,7 @@
             *.gz|*.[zZ]) DECOMP=-d;;
         esac
         # Do *not* add quotes around $DECOMP!
-        gzip $DECOMP -v %f
+        gzip -9 $DECOMP -v %f
 
 + t t
 Y       Gzip or gunzip tagged files
@@ -251,7 +251,7 @@
             case "$i" in
                 *.gz|*.[zZ]) DECOMP=-d;;
             esac
-            gzip $DECOMP -v "$i"
+            gzip -9 $DECOMP -v "$i"
         done
 
 + ! t t