diff --git a/src/rug/ar.632 b/src/rug/ar.633
similarity index 99%
rename from src/rug/ar.632
rename to src/rug/ar.633
index 6e31b5f2..ba8969dc 100644
--- a/src/rug/ar.632
+++ b/src/rug/ar.633
@@ -5702,6 +5702,9 @@ L.LD2B:	DECB D
 	JSR PC,L.GWRD
 	MOV E,B
 	ADD RELOC,B
+	CMP B,O.SYME
+	BHI L.LD3
+	MOV B,O.SYME
 
 L.LD3:	JSR PC,@F
 	BGE L.LD4