diff --git a/polymer/eduke32/build/include/build.h b/polymer/eduke32/build/include/build.h
index 0a077c5da..bb5efa385 100644
--- a/polymer/eduke32/build/include/build.h
+++ b/polymer/eduke32/build/include/build.h
@@ -379,7 +379,9 @@ enum {
 //   bit 8: 1 = Blocking sprite (use with hitscan / cliptype 1)      "H"
 //   bit 9: 1 = Transluscence reversing, 0 = normal                  "T"
 //   bit 10: reserved (in use by a renderer hack, see CSTAT_SPRITE_MDHACK)
-//   bit 11: 1 = determine shade based only on its own shade member (see CON's spritenoshade command)
+//   bit 11: 1 = determine shade based only on its own shade member (see CON's spritenoshade command), i.e.
+//               don't take over shade from parallaxed ceiling/nonparallaxed floor
+//               (NOTE: implemented on the game side)
 //   bit 12: reserved
 //   bit 13: 1 = does not cast shadow
 //   bit 14: 1 = invisible but casts shadow
diff --git a/polymer/eduke32/source/astub.c b/polymer/eduke32/source/astub.c
index 34e425aa6..d5abe6108 100644
--- a/polymer/eduke32/source/astub.c
+++ b/polymer/eduke32/source/astub.c
@@ -6294,8 +6294,9 @@ static void Keys3d(void)
     {
         if (AIMING_AT_SPRITE)
         {
-            sprite[searchwall].cstat ^= 2048;
-            message("Sprite %d spritenoshade bit: %s", searchwall, ONOFF(sprite[searchwall].cstat&2048));
+            sprite[searchwall].cstat ^= CSTAT_SPRITE_NOSHADE;
+            message("Sprite %d spritenoshade bit: %s", searchwall,
+                    ONOFF(sprite[searchwall].cstat&CSTAT_SPRITE_NOSHADE));
         }
     }
 
@@ -10981,7 +10982,7 @@ void ExtAnalyzeSprites(int32_t ourx, int32_t oury, int32_t oura, int32_t smoothr
                 tspr->pal = fpal;
 
             // 2nd and 3rd rule minus "actor condition"
-            if (!wallaligned && (tspr->cstat&2048)==0)
+            if (!wallaligned && (tspr->cstat&CSTAT_SPRITE_NOSHADE)==0)
             {
                 if (sector[tspr->sectnum].ceilingstat&1)
                     sh = sector[tspr->sectnum].ceilingshade;
diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c
index 8f7b58c06..68593bbbd 100644
--- a/polymer/eduke32/source/game.c
+++ b/polymer/eduke32/source/game.c
@@ -7234,7 +7234,7 @@ void G_DoSpriteAnimations(int32_t ourx, int32_t oury, int32_t oura, int32_t smoo
                     continue;
             }
 
-        if (A_CheckSpriteFlags(t->owner,SPRITE_NOSHADE) || (t->cstat&2048))
+        if (A_CheckSpriteFlags(t->owner, SPRITE_NOSHADE) || (t->cstat&CSTAT_SPRITE_NOSHADE))
             l = sprite[t->owner].shade;
         else
         {
diff --git a/polymer/eduke32/source/macros.h b/polymer/eduke32/source/macros.h
index 6367e9b5f..f146e4196 100644
--- a/polymer/eduke32/source/macros.h
+++ b/polymer/eduke32/source/macros.h
@@ -155,7 +155,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 //       bit 8: 1 = Blocking sprite (use with hitscan)                "H"
 //       bit 9: reserved
 //       bit 10: reserved
-//       bit 11: reserved
+//       bit 11: 1 = determine shade based only on its own shade member (see CON's spritenoshade command), i.e.
+//                   don't take over shade from parallaxed ceiling/nonparallaxed floor
+//                   (NOTE: implemented on the game side)
 //       bit 12: reserved
 //       bit 13: reserved
 //       bit 14: reserved
@@ -172,6 +174,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define CSTAT_SPRITE_YCENTER        BIT(7)
 #define CSTAT_SPRITE_BLOCK_HITSCAN  BIT(8)
 #define CSTAT_SPRITE_TRANS_FLIP     BIT(9)
+#define CSTAT_SPRITE_NOSHADE        BIT(11)
 
 #define CSTAT_SPRITE_INVISIBLE      BIT(15)