diff --git a/iocBoot/iocLinux/auto_settings.req b/iocBoot/iocLinux/auto_settings.req
index e546555ab2b1f0271dc3eee20a916ed5bf2e3f89..7970004b78393d42a79de3b5793dad3c7c581ba0 100644
--- a/iocBoot/iocLinux/auto_settings.req
+++ b/iocBoot/iocLinux/auto_settings.req
@@ -30,6 +30,9 @@ file scan_settings.req P=$(P),S=scanH
 ##$(P)KohzuMode2MO.VAL
 ##$(P)Kohzu_yOffsetAO.VAL
 
+# Io calc
+file Io_settings.req P=xxx:Io:
+
 ### user calcs.  Disabled on startup unless the xxxEnable PV is
 ### autosaved.
 file userCalcs10_settings.req P=$(P)
diff --git a/iocBoot/iocSolaris/auto_settings.req b/iocBoot/iocSolaris/auto_settings.req
index 943e84befdea82cebd54d786ac0b5200e9353ca6..b3937ac3df435de15ecae52325c258f778179096 100644
--- a/iocBoot/iocSolaris/auto_settings.req
+++ b/iocBoot/iocSolaris/auto_settings.req
@@ -35,6 +35,9 @@ file scan_settings.req P=$(P),S=scanH
 #$(P)KohzuMode2MO.VAL
 #$(P)Kohzu_yOffsetAO.VAL
 
+# Io calc
+file Io_settings.req P=xxx:Io:
+
 ### user calcs.  Disabled on startup unless the xxxEnable PV is
 ### autosaved.
 file userCalcs10_settings.req P=$(P)