diff --git a/board/freescale/common/pixis.c b/board/freescale/common/pixis.c
index 119eaf9..a35b5cf 100644
--- a/board/freescale/common/pixis.c
+++ b/board/freescale/common/pixis.c
@@ -284,7 +284,7 @@
  *
  */
 static int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
-				      char *argv[])
+				      char * const argv[])
 {
 	/* Disable the VELA sequencer and the watchdog */
 	clrbits_8(pixis_base + PIXIS_VCTL, 9);
@@ -302,7 +302,7 @@
 
 /* Enable or disable SGMII mode for a TSEC
  */
-static int pixis_set_sgmii(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+static int pixis_set_sgmii(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	int which_tsec = -1;
 	unsigned char mask;
@@ -430,7 +430,7 @@
 	return intval + decval;
 }
 
-static int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+static int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	unsigned int i;
 	char *p_cf = NULL;