diff --git a/telnet.h b/telnet.h
index 27d8700..c6a0ae4 100644
--- a/telnet.h
+++ b/telnet.h
@@ -45,7 +45,7 @@ extern void     telnet_rfc2217_cfg(tn_ctx_t * tcc, int cmd,
 extern void     telnet_rfc2217_ctl(tn_ctx_t * tcc, unsigned int val);
 
 /*RFC2217 modem state*/
-#define TNS_STATE_CD     0x80
+#define TNS_STATE_DCD    0x80
 #define TNS_STATE_RI     0x40
 #define TNS_STATE_DSR    0x20
 #define TNS_STATE_CTS    0x10
diff --git a/ttynvt.c b/ttynvt.c
index d62f65e..2bd1738 100644
--- a/ttynvt.c
+++ b/ttynvt.c
@@ -429,12 +429,12 @@ static void _modem_status_cb(void *cctx, int status)
     ttynvt_t       *tty = cctx;
     int             mcr = 0;
 
-    DBG("MCR: DSR=%c CTS=%c RI=%c CD=%c\n",
+    DBG("MCR: DSR=%c CTS=%c RI=%c DCD=%c\n",
         status & TNS_STATE_DSR ? '1' : '0',
         status & TNS_STATE_CTS ? '1' : '0',
-        status & TNS_STATE_RI ? '1' : '0', status & TNS_STATE_CD ? '1' : '0');
+        status & TNS_STATE_RI ? '1' : '0', status & TNS_STATE_DCD ? '1' : '0');
 
-    if (status & TNS_STATE_CD)
+    if (status & TNS_STATE_DCD)
         mcr |= TIOCM_CD;
     if (status & TNS_STATE_RI)
         mcr |= TIOCM_RI;