diff --git a/libsrc/cbm/sysrename.s b/libsrc/cbm/sysrename.s
index 574023d7d..86cb37011 100644
--- a/libsrc/cbm/sysrename.s
+++ b/libsrc/cbm/sysrename.s
@@ -7,7 +7,8 @@
         .export         __sysrename
 
         .import         fnparse, fnadd, fnparsename
-        .import         opencmdchannel, closecmdchannel, writefndiskcmd
+        .import         opencmdchannel, closecmdchannel
+        .import         writefndiskcmd, readdiskerror
         .import         popax
 
         .import         fncmd, fnunit
@@ -40,6 +41,9 @@
         sta     fncmd
         jsr     writefndiskcmd
 
+;       ldx     fnunit
+;       jsr     readdiskerror
+
         pha
         ldx     fnunit
         jsr     closecmdchannel