diff --git a/zsnes/src/video/newgfx.asm b/zsnes/src/video/newgfx.asm
index 569c8a7f..25ac9c25 100644
--- a/zsnes/src/video/newgfx.asm
+++ b/zsnes/src/video/newgfx.asm
@@ -300,8 +300,9 @@ NEWSYM newengine8b
     jne .dontdraw
     mov dword[scfbl],0
 .dontdraw
-    mov [BGFB+eax],ebx
-    cmp [BGFB+eax-1],bx
+    ; Variable size write error fix [TRAC]
+    mov [BGFB+eax],bl
+    cmp [BGFB+eax-1],bl
     je .nosbgfb
     mov byte[bgallchange+eax],1
 .nosbgfb
diff --git a/zsnes/src/video/newgfx16.asm b/zsnes/src/video/newgfx16.asm
index 67a26190..6d8c036b 100644
--- a/zsnes/src/video/newgfx16.asm
+++ b/zsnes/src/video/newgfx16.asm
@@ -782,8 +782,9 @@ NEWSYM newengine16b
     jne .dontdraw
     mov dword[scfbl],0
 .dontdraw
-    mov [BGFB+eax],ebx
-    cmp [BGFB+eax-1],bx
+    ; Variable size write error fix [TRAC]
+    mov [BGFB+eax],bl
+    cmp [BGFB+eax-1],bl
     je .nosbgfb
     mov byte[bgallchange+eax],1
 .nosbgfb