diff --git a/PDP11/pdp11_ta.c b/PDP11/pdp11_ta.c
index 39356460..3d9e32a5 100644
--- a/PDP11/pdp11_ta.c
+++ b/PDP11/pdp11_ta.c
@@ -301,8 +301,9 @@ if ((fnc != TACS_REW) && !(flg & OP_WRI)) {             /* spc/read cmd? */
         }
     if ((old_ust ^ uptr->UST) == (UST_REV|UST_GAP)) {   /* reverse in gap? */
         if (uptr->UST)                                  /* skip file gap */
-            sim_tape_rdrecr (uptr, ta_xb, &t, TA_MAXFR);
-        else sim_tape_rdrecf (uptr, ta_xb, &t, TA_MAXFR);
+            (void)sim_tape_rdrecr (uptr, ta_xb, &t, TA_MAXFR);
+        else 
+            (void)sim_tape_rdrecf (uptr, ta_xb, &t, TA_MAXFR);
         if (DEBUG_PRS (ta_dev))
             fprintf (sim_deb, ">>TA skip gap: op=%o, old_sta = %o, pos=%d\n",
                      fnc, uptr->UST, uptr->pos);
diff --git a/PDP8/pdp8_ct.c b/PDP8/pdp8_ct.c
index 8015cba9..8be43111 100644
--- a/PDP8/pdp8_ct.c
+++ b/PDP8/pdp8_ct.c
@@ -329,8 +329,9 @@ if ((ct_sra & SRA_ENAB) && (uptr->flags & UNIT_ATT)) {  /* enabled, att? */
                 ">>CT skip gap: op=%o, old_sta = %o, pos=%d\n",
                 fnc, uptr->UST, uptr->pos);
             if (uptr->UST)                              /* skip file gap */
-                sim_tape_rdrecr (uptr, ct_xb, &t, CT_MAXFR);
-            else sim_tape_rdrecf (uptr, ct_xb, &t, CT_MAXFR);
+                (void)sim_tape_rdrecr (uptr, ct_xb, &t, CT_MAXFR);
+            else
+                (void)sim_tape_rdrecf (uptr, ct_xb, &t, CT_MAXFR);
             }
         }
     else uptr->UST = 0;
diff --git a/VAX/vax820_stddev.c b/VAX/vax820_stddev.c
index 0cd16552..0807abe2 100644
--- a/VAX/vax820_stddev.c
+++ b/VAX/vax820_stddev.c
@@ -988,7 +988,7 @@ return SCPE_OK;
 int32 fl_rd (int32 pa)
 {
 int32 rg = (pa >> 1) & 0xF;
-int32 val;
+int32 val = 0;
 
 switch (rg) {
 
@@ -1032,10 +1032,6 @@ switch (rg) {
         else                                            /* no, disk 0 */
             sim_activate (&fl_unit[0], fl_cwait);       /* start operation */
         break;
-
-    default:
-        val = 0;
-        break;
         }
 sim_debug (FL_DB_REG, &fl_dev, "fl_rd(%s) data=0x%02X\n", fl_regnames[rg], val);
 return val;