diff --git a/PDP10/pdp6_dct.c b/PDP10/pdp6_dct.c
index 7005f3e4..89c8ec10 100644
--- a/PDP10/pdp6_dct.c
+++ b/PDP10/pdp6_dct.c
@@ -72,7 +72,7 @@ DIB                 dct_dib[] = {
 
 REG                 dct_reg[] = {
     {BRDATA(BUFF, dct_buf, 16, 36, NUM_DEVS_DCT), REG_HRO},
-    {BRDATA(BUFF, dct_acc, 16, 36, NUM_DEVS_DCT), REG_HRO},
+    {BRDATA(ACC, dct_acc, 16, 36, NUM_DEVS_DCT), REG_HRO},
     {0}
 };