diff -r 32f5982604f4 -r bf51bc7e2808 hedgewars/uGearsHedgehog.pas
--- a/hedgewars/uGearsHedgehog.pas	Sun Jan 05 00:46:26 2014 +0400
+++ b/hedgewars/uGearsHedgehog.pas	Sun Jan 05 10:54:03 2014 +0400
@@ -877,7 +877,7 @@
             end;
         if (land and lfBouncy = 0) or (Gear^.State and gstCollision <> 0) then
             Gear^.dY:= _0;
-        Gear^.State:= Gear^.State and not gstCollision 
+        Gear^.State:= Gear^.State and (not gstCollision)
         end;
     Gear^.State:= Gear^.State or gstMoving;
     if (CurrentHedgehog^.Gear = Gear) and (CurrentHedgehog^.Gear^.State and gstHHDriven <> 0) and
@@ -932,7 +932,7 @@
             if (land and lfBouncy = 0) or (Gear^.dX.QWordValue < _0_02.QWordValue) then
                 Gear^.dY:= _0
             end;
-        Gear^.State:= Gear^.State and not gstCollision 
+        Gear^.State:= Gear^.State and (not gstCollision)
         end
     else
         Gear^.dY:= Gear^.dY + cGravity;
@@ -1057,7 +1057,7 @@
             Gear^.dY:= _0;
             Gear^.Y:= Gear^.Y + _1
             end;
-        Gear^.State:= Gear^.State and not gstCollision 
+        Gear^.State:= Gear^.State and (not gstCollision)
         end;
 
     // could become nil if ai's hog fails to respawn in ai survival