diff --git a/src/ether_nethub.c b/src/ether_nethub.c
index df27eec..e9803e2 100644
--- a/src/ether_nethub.c
+++ b/src/ether_nethub.c
@@ -468,7 +468,7 @@ LispPTR ether_get(LispPTR args[])
   log_debug(("ether_get() - begin\n"));
 
   target = (u_char *)NativeAligned2FromLAddr(args[1]);
-  maxByteCount = 2 * LispIntToCInt(args[0]); /* words to bytes */
+  maxByteCount = BYTESPER_DLWORD * LispIntToCInt(args[0]); /* words to bytes */
   log_debug(("  target = %p maxBytecount: %d bytes\n", (void *)target, maxByteCount));
 
   ether_buf = target;
@@ -501,7 +501,7 @@ LispPTR ether_send(LispPTR args[])
   log_debug(("ether_send() - begin\n"));
 
   u_char *source = (u_char *)NativeAligned2FromLAddr(args[1]);
-  int byteCount = 2 * LispIntToCInt(args[0]); /* words to bytes */
+  int byteCount = BYTESPER_DLWORD * LispIntToCInt(args[0]); /* words to bytes */
 
   log_debug(("   source = %p , bytecount: %d bytes\n", (void *)source, byteCount));
 
diff --git a/src/ether_sunos.c b/src/ether_sunos.c
index deb4afe..ba75cf1 100644
--- a/src/ether_sunos.c
+++ b/src/ether_sunos.c
@@ -366,7 +366,7 @@ LispPTR ether_get(LispPTR args[])
   LispPTR MaxByteCount;
   sigset_t signals;
 
-  MaxByteCount = 2 * (0xFFFF & args[0]); /* words to bytes */
+  MaxByteCount = BYTERSPER_DLWORD * (0xFFFF & args[0]); /* words to bytes */
 
   DBPRINT(("Ether Get.  "));
 
@@ -408,7 +408,7 @@ LispPTR ether_send(LispPTR args[])
   LispPTR MaxByteCount;
   u_char *BufferAddr; /* buffer address pointer(in native address) */
 
-  MaxByteCount = 2 * (0xFFFF & args[0]); /* words to bytes */
+  MaxByteCount = BYTESPER_DLWORD * (0xFFFF & args[0]); /* words to bytes */
   BufferAddr = (u_char *)NativeAligned2FromLAddr(args[1]);
 
   if (ether_fd > 0) {