diff --git a/bld/trap/par/c/parqnx.c b/bld/trap/par/c/parqnx.c
index f9d17f6c46..9296760e3a 100644
--- a/bld/trap/par/c/parqnx.c
+++ b/bld/trap/par/c/parqnx.c
@@ -36,11 +36,9 @@
 #include <sys/osinfo.h>
 #include "trperr.h"
 #include "parlink.h"
+#include "realmod.h"
 
 
-#define INFO_SEG    0x40
-#define PAR_BASE    0x08
-
 #define PRIV_MASK   3
 #define IOPL_SHIFT  12
 
@@ -60,7 +58,7 @@ int NumPrinters( void )
     unsigned short  __far *par;
     int i;
 
-    par = _MK_FP( INFO_SEG, PAR_BASE );
+    par = _MK_FP( BDATA_SEG, BDATA_PRINTER_BASE );
     for( i = 3; i > 0; --i ) {
         if( par[i - 1] != 0 ) {
             return( i );
@@ -74,7 +72,7 @@ unsigned PrnAddress( int printer )
 {
     unsigned short  __far *par;
 
-    par = _MK_FP( INFO_SEG, PAR_BASE );
+    par = _MK_FP( BDATA_SEG, BDATA_PRINTER_BASE );
     return( par[printer] );
 }