diff -r aeac678d7c79 -r 128fbd36eee4 hedgewars/uGearsHandlersMess.pas
--- a/hedgewars/uGearsHandlersMess.pas	Tue Oct 30 23:57:57 2018 +0100
+++ b/hedgewars/uGearsHandlersMess.pas	Wed Oct 31 13:08:56 2018 +0100
@@ -5806,7 +5806,7 @@
                     dmg:= dmg div Gear^.Boom;
 
                     if dmg > 0 then
-                        ApplyDamage(tmp, CurrentHedgehog, dmg, dsUnknown);
+                        ApplyDamage(tmp, CurrentHedgehog, dmg, dsHammer);
                     end;
 		tmp^.dY:= _0_03 * Gear^.Boom
                 end;