diff --git a/common/cmd_flash.c b/common/cmd_flash.c
index 6361c4e..5d8fb7a 100644
--- a/common/cmd_flash.c
+++ b/common/cmd_flash.c
@@ -287,7 +287,7 @@
 }
 #endif /* CONFIG_SYS_NO_FLASH */
 
-int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #ifndef CONFIG_SYS_NO_FLASH
 	ulong bank;
@@ -319,7 +319,7 @@
 	return 0;
 }
 
-int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #ifndef CONFIG_SYS_NO_FLASH
 	flash_info_t *info;
@@ -461,7 +461,7 @@
 }
 #endif /* CONFIG_SYS_NO_FLASH */
 
-int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #ifndef CONFIG_SYS_NO_FLASH
 	flash_info_t *info;