diff --git a/emul/forth/z80c.bin b/emul/forth/z80c.bin
index ddcc565..d1a5509 100644
Binary files a/emul/forth/z80c.bin and b/emul/forth/z80c.bin differ
diff --git a/forth/boot.z80 b/forth/boot.z80
index e7e9d7e..af0d617 100644
--- a/forth/boot.z80
+++ b/forth/boot.z80
@@ -419,6 +419,7 @@ CODE (roll)
     B H LDrr,
     C L LDrr,
     SP ADDHLss,
+    HL INCss,
     D H LDrr,
     E L LDrr,
     HL DECss,