diff --git a/phy.h b/phy.h
index 8e82547..e80be2f 100644
--- a/phy.h
+++ b/phy.h
@@ -38,6 +38,7 @@
  */
 #define PHY_MMD31_FEDCR     0xa400
 #define PHY_MMD31_GBCR      0xa412
+#define PHY_MMD31_GANLPAR   0xa414
 
 
 
diff --git a/rtl837x_phy.c b/rtl837x_phy.c
index 947b85b..d75a577 100644
--- a/rtl837x_phy.c
+++ b/rtl837x_phy.c
@@ -404,7 +404,7 @@ void phy_show(uint8_t port) __banked
 		print_string(" 100Base-Half");
 	if (v & 0x0100)
 		print_string(" 100Base-Full");
-	phy_read(port, PHY_MMD31, 0xa414);
+	phy_read(port, PHY_MMD31, PHY_MMD31_GANLPAR);
 	v = SFR_DATA_U16;
 	if (v & 0x0400)
 		print_string(" 1000Base-Half");