diff --git a/include/configs/lager.h b/include/configs/lager.h
index 3bc494fd03..80c90015df 100644
--- a/include/configs/lager.h
+++ b/include/configs/lager.h
@@ -36,6 +36,7 @@
 #define CONFIG_CMD_SF
 #define CONFIG_CMD_SPI
 #define CONFIG_SYS_TEXT_BASE	0xE8080000
+#define CONFIG_SYS_THUMB_BUILD
 
 #define	CONFIG_CMDLINE_TAG
 #define	CONFIG_SETUP_MEMORY_TAGS