diff --git a/board/freescale/m5235evb/mii.c b/board/freescale/m5235evb/mii.c
index 58fabdf..1fd4d99 100644
--- a/board/freescale/m5235evb/mii.c
+++ b/board/freescale/m5235evb/mii.c
@@ -204,7 +204,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {
diff --git a/board/freescale/m5329evb/mii.c b/board/freescale/m5329evb/mii.c
index 31f1510..8f6abf3 100644
--- a/board/freescale/m5329evb/mii.c
+++ b/board/freescale/m5329evb/mii.c
@@ -203,7 +203,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {
diff --git a/board/freescale/m54455evb/mii.c b/board/freescale/m54455evb/mii.c
index c067183..7a59aa0 100644
--- a/board/freescale/m54455evb/mii.c
+++ b/board/freescale/m54455evb/mii.c
@@ -221,7 +221,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {
diff --git a/board/m5271evb/mii.c b/board/m5271evb/mii.c
index f6c63c3..3830ce7 100644
--- a/board/m5271evb/mii.c
+++ b/board/m5271evb/mii.c
@@ -200,7 +200,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {
diff --git a/board/m5272c3/mii.c b/board/m5272c3/mii.c
index fadcbb3..0ecc44a 100644
--- a/board/m5272c3/mii.c
+++ b/board/m5272c3/mii.c
@@ -200,7 +200,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {
diff --git a/board/m5282evb/mii.c b/board/m5282evb/mii.c
index ebd3ed9..d7c6d1f 100644
--- a/board/m5282evb/mii.c
+++ b/board/m5282evb/mii.c
@@ -201,7 +201,7 @@
 }
 #endif				/* CFG_DISCOVER_PHY */
 
-int mii_init(void) __attribute__((weak,alias("__mii_init")));
+void mii_init(void) __attribute__((weak,alias("__mii_init")));
 
 void __mii_init(void)
 {