diff --git a/sigma/sigma_bugs.txt b/sigma/sigma_bugs.txt
index e3ca048f..a034283e 100644
--- a/sigma/sigma_bugs.txt
+++ b/sigma/sigma_bugs.txt
@@ -121,6 +121,7 @@
 115. MT: error handling not consistent.
 116: IO: dangling else in write direct mode 1 code causes incorrect behavior.
 117: CPU: sim_interval is decremented before breakpoint test, which is incorrect.
+118. MT: revised error handling failed to set tape mark status on space file forward/reverse.
 
 
 Diagnostic Notes
diff --git a/sigma/sigma_mt.c b/sigma/sigma_mt.c
index 581b4084..7c7d3f7e 100644
--- a/sigma/sigma_mt.c
+++ b/sigma/sigma_mt.c
@@ -25,6 +25,7 @@
 
    mt           7320 and 7322/7323 magnetic tape
 
+   20-Jul-22    RMS     Space record must set EOF flag on tape mark (Ken Rector)
    03-Jul-22    RMS     Fixed error in handling of channel errors (Ken Rector)
    02-Jul-22    RMS     Fixed bugs in multi-unit operation
    07-Jun-22    RMS     Removed unused variables (V4)
@@ -380,6 +381,7 @@ switch (cmd) {                                          /* case on command */
             if (CHS_IFERR (st))                         /* chan or SCP err? */
                 return mt_chan_err (dva, st);           /* uend and stop */
             }
+        uptr->UST |= MTDV_EOF;                          /* set eof */
         break;
 
     case MCM_SBKF:                                       /* space rev file */
@@ -389,6 +391,7 @@ switch (cmd) {                                          /* case on command */
             if (CHS_IFERR (st))                         /* chan or SCP err? */
                 return mt_chan_err (dva, st);           /* uend and stop */
             }
+        uptr->UST |= MTDV_EOF;                          /* set eof */
         break;
 
     case MCM_WTM:                                       /* write eof */