diff --git a/BasiliskII/src/uae_cpu/newcpu.cpp b/BasiliskII/src/uae_cpu/newcpu.cpp
index ee13d1db..d24b7ba1 100644
--- a/BasiliskII/src/uae_cpu/newcpu.cpp
+++ b/BasiliskII/src/uae_cpu/newcpu.cpp
@@ -831,7 +831,7 @@ static int movec_illg (int regno)
 	case 3:
 		if ((regno & 0x7ff) <= 2)
 			return 0;
-		if (regno == 3 || regno == 4)
+		if (regno == 0x803 || regno == 0x804)
 			return 0;
 		break;
 	case 4: