diff --git a/cpu/mpc5xxx/fec.c b/cpu/mpc5xxx/fec.c
index 06dd56f..634698b 100644
--- a/cpu/mpc5xxx/fec.c
+++ b/cpu/mpc5xxx/fec.c
@@ -427,7 +427,11 @@
 			/*
 			 * Set the auto-negotiation advertisement register bits
 			 */
+#ifndef CONFIG_FEC_10MBIT
 			miiphy_write(phyAddr, 0x4, 0x01e1);
+#else
+			miiphy_write(phyAddr, 0x4, 0x061);/* Advertise 10FDX */
+#endif
 
 			/*
 			 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation