diff --git a/common/cmd_ext2.c b/common/cmd_ext2.c
index af836cd..927e22f 100644
--- a/common/cmd_ext2.c
+++ b/common/cmd_ext2.c
@@ -231,7 +231,7 @@
 			return(1);
 		}
 
-		if (strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) {
+		if (strncmp((char *)info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) {
 			printf ("\n** Invalid partition type \"%.32s\""
 				" (expect \"" BOOT_PART_TYPE "\")\n",
 				info.type);