diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h
index fd42daa..49ea483 100644
--- a/arch/sandbox/include/asm/state.h
+++ b/arch/sandbox/include/asm/state.h
@@ -71,7 +71,8 @@
 	const char *parse_err;		/* Error to report from parsing */
 	int argc;			/* Program arguments */
 	char **argv;			/* Command line arguments */
-	const char *jumped_fname;	/* Jumped from previous U_Boot */
+	const char *jumped_fname;	/* Jumped from previous U-Boot */
+	const char *prog_fname;		/* U-Boot executable filename */
 	uint8_t *ram_buf;		/* Emulated RAM buffer */
 	unsigned long ram_size;		/* Size of RAM buffer */
 	const char *ram_buf_fname;	/* Filename to use for RAM buffer */