diff --git a/src/blitter/32bpp_optimized.cpp b/src/blitter/32bpp_optimized.cpp
--- a/src/blitter/32bpp_optimized.cpp
+++ b/src/blitter/32bpp_optimized.cpp
@@ -177,6 +177,15 @@ inline void Blitter_32bppOptimized::Draw
 					}
 					break;
 
+				case BM_BLACK_REMAP:
+					do {
+						*dst = Colour(0, 0, 0);
+						dst++;
+						src_px++;
+						src_n++;
+					} while (--n != 0);
+					break;
+
 				case BM_TRANSPARENT:
 					/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
 					 *  This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
@@ -241,6 +250,7 @@ void Blitter_32bppOptimized::Draw(Blitte
 		case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
 		case BM_TRANSPARENT:  Draw<BM_TRANSPARENT> (bp, zoom); return;
 		case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP> (bp, zoom); return;
+		case BM_BLACK_REMAP:  Draw<BM_BLACK_REMAP> (bp, zoom); return;
 	}
 }