diff --git a/PDP10/kx10_cpu.c b/PDP10/kx10_cpu.c
index 77c6d16..cdf58c1 100644
--- a/PDP10/kx10_cpu.c
+++ b/PDP10/kx10_cpu.c
@@ -4437,6 +4437,7 @@ st_pi:
              }
              break;
           }
+          /* Fall through */
 #else
     case 0052: case 0053:
 #endif
diff --git a/PDP10/kx10_tu.c b/PDP10/kx10_tu.c
index ebb0e94..614c610 100644
--- a/PDP10/kx10_tu.c
+++ b/PDP10/kx10_tu.c
@@ -752,6 +752,8 @@ t_stat tu_srv(UNIT * uptr)
               /* Position just after mark */
               if (GET_FNC(uptr->CMD) == FNC_SPACEB && r == MTSE_TMK)
                   sim_tape_sprecf(uptr, &reclen);
+              /* Fall Through */
+
          case MTSE_EOM:           /* end of medium */
               if (tu_frame[ctlr] != 0)
                  uptr->STATUS |= ER1_FCE;