diff --git a/src/sysen2/ld10.61 b/src/sysen2/ld10.62
similarity index 99%
rename from src/sysen2/ld10.61
rename to src/sysen2/ld10.62
index 7346d6dd..1addc006 100755
--- a/src/sysen2/ld10.61
+++ b/src/sysen2/ld10.62
@@ -37,6 +37,7 @@ IFN GT40F,[TITLE GT40 SLAVE FOR PDP10
 ]
 IFN PDP6F,[TITLE DISPLAY SLAVE FOR PDP6
 ]
+IF1,IFE PDP6F,EXPUNGE DADD,DSUB
 
 ZR=0