diff --git a/B5500/b5500_urec.c b/B5500/b5500_urec.c
index e195685b..89da43fa 100644
--- a/B5500/b5500_urec.c
+++ b/B5500/b5500_urec.c
@@ -31,8 +31,7 @@
 #include "sim_defs.h"
 #include "sim_console.h"
 
-#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | UNIT_ROABLE | \
-                                 MODE_029
+#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | MODE_029
 #define UNIT_CDP        UNIT_ATTABLE | UNIT_DISABLE | MODE_029
 #define UNIT_LPR        UNIT_ATTABLE | UNIT_DISABLE
 
diff --git a/I7000/i7000_cdr.c b/I7000/i7000_cdr.c
index 17063a95..a7d5f966 100644
--- a/I7000/i7000_cdr.c
+++ b/I7000/i7000_cdr.c
@@ -34,8 +34,7 @@
 #include "sim_defs.h"
 #ifdef NUM_DEVS_CDR
 
-#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | \
-                         UNIT_ROABLE | MODE_026
+#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | MODE_026
 
 /* Flags for punch and reader. */
 #define ATTENA          (1 << (UNIT_V_UF+7))
diff --git a/I7000/i7090_cdr.c b/I7000/i7090_cdr.c
index e82938f6..493b5d83 100644
--- a/I7000/i7090_cdr.c
+++ b/I7000/i7090_cdr.c
@@ -28,8 +28,7 @@
 
 #ifdef NUM_DEVS_CDR
 
-#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | UNIT_ROABLE |\
-                        MODE_026
+#define UNIT_CDR        UNIT_ATTABLE | UNIT_RO | UNIT_DISABLE | MODE_026
 
 
 /* std devices. data structures