diff --git a/configs/colibri_t20_defconfig b/configs/colibri_t20_defconfig
index 67456c8..a1a12e2 100644
--- a/configs/colibri_t20_defconfig
+++ b/configs/colibri_t20_defconfig
@@ -4,6 +4,7 @@
 CONFIG_TEXT_BASE=0x00110000
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_NR_DRAM_BANKS=2
+CONFIG_ENV_SOURCE_FILE="colibri_t20"
 CONFIG_ENV_SIZE=0x10000
 CONFIG_ENV_OFFSET=0x200000
 CONFIG_DEFAULT_DEVICE_TREE="tegra20-colibri"