diff --git a/PDP11/pdp11_hk.c b/PDP11/pdp11_hk.c
index 882b8f88..cb82215e 100644
--- a/PDP11/pdp11_hk.c
+++ b/PDP11/pdp11_hk.c
@@ -1480,7 +1480,7 @@ if (hkxb == NULL)
     hkxb = (uint16 *) calloc (HK_MAXFR, sizeof (uint16));
 if (hkxb == NULL)
     return SCPE_MEM;
-return SCPE_OK;
+return auto_config (0, 0);
 }
 
 /* Device attach */
diff --git a/PDP11/pdp11_rl.c b/PDP11/pdp11_rl.c
index 219c59e9..308bfe5b 100644
--- a/PDP11/pdp11_rl.c
+++ b/PDP11/pdp11_rl.c
@@ -992,7 +992,7 @@ if (rlxb == NULL)
     rlxb = (uint16 *) calloc (RL_MAXFR, sizeof (uint16));
 if (rlxb == NULL)
     return SCPE_MEM;
-return SCPE_OK;
+return auto_config (0, 0);
 }
 
 /* Attach routine */