--- a/hedgewars/uLand.pas	Sat Nov 14 22:19:05 2015 +0300
+++ b/hedgewars/uLand.pas	Sun Nov 15 13:35:23 2015 +0100
@@ -263,7 +263,7 @@
 TryDo(Surface <> nil, 'Assert (LandSurface <> nil) failed', true);
 
 if SDL_MustLock(Surface) then
-    SDLTry(SDL_LockSurface(Surface) >= 0, true);
+    SDLTry(SDL_LockSurface(Surface) >= 0, 'SDL_LockSurface', true);
 
 p:= Surface^.pixels;
 for y:= 0 to LAND_HEIGHT - 1 do
@@ -451,7 +451,7 @@
     cpX:= (LAND_WIDTH - tmpsurf^.w) div 2;
     cpY:= LAND_HEIGHT - tmpsurf^.h;
     if SDL_MustLock(tmpsurf) then
-        SDLTry(SDL_LockSurface(tmpsurf) >= 0, true);
+        SDLTry(SDL_LockSurface(tmpsurf) >= 0, 'SDL_LockSurface', true);
 
         p:= tmpsurf^.pixels;
         for y:= 0 to Pred(tmpsurf^.h) do