diff --git a/build/ka10/processor.tcl b/build/ka10/processor.tcl
index 23dd30c7..d6b1553a 100644
--- a/build/ka10/processor.tcl
+++ b/build/ka10/processor.tcl
@@ -282,7 +282,7 @@ respond "\n" "LPT REL_SYSENG;LPT 11\r"
 expect ":KILL"
 respond "*" ":midas;73\r"
 expect "MIDAS"
-respond "\n" "TECO6 REL_.TECO.;TECO6 64K\r"
+respond "\n" "TECO6 REL_.TECO.;TECO6 256K\r"
 expect ":KILL"
 respond "*" ":mudsys;stink\r"
 respond "\n" "MTECODM\033L MLPT\033L MMACTAP\033L MTECO6\033L D\033\033"
diff --git a/src/_teco_/teco6.64k b/src/_teco_/teco6.256k
similarity index 99%
rename from src/_teco_/teco6.64k
rename to src/_teco_/teco6.256k
index 4b9b056a..220f0bf1 100644
--- a/src/_teco_/teco6.64k
+++ b/src/_teco_/teco6.256k
@@ -1,6 +1,6 @@
 
 RELOCA
-MOBY==140000
+MOBY==740000
 LPTR==1
 
 TITLE TECO6