diff --git a/games/NXDoom/src/doom/r_plane.c b/games/NXDoom/src/doom/r_plane.c
index 3cd01a724..a2a84c18a 100644
--- a/games/NXDoom/src/doom/r_plane.c
+++ b/games/NXDoom/src/doom/r_plane.c
@@ -451,13 +451,15 @@ visplane_t *r_check_plane(visplane_t *pl, int start, int stop)
 
   /* make a new visplane */
 
+  if (lastvisplane - visplanes == CONFIG_GAMES_NXDOOM_MAXVISPLANES)
+    {
+      i_error("r_check_plane: no more visplanes");
+    }
+
   lastvisplane->height = pl->height;
   lastvisplane->picnum = pl->picnum;
   lastvisplane->lightlevel = pl->lightlevel;
 
-  if (lastvisplane - visplanes == CONFIG_GAMES_NXDOOM_MAXVISPLANES)
-    i_error("r_check_plane: no more visplanes");
-
   pl = lastvisplane++;
   pl->minx = start;
   pl->maxx = stop;