diff --git a/variables.h b/variables.h
index 7f2ab00..0461c5d 100644
--- a/variables.h
+++ b/variables.h
@@ -151,6 +151,7 @@
 #define TW_CRYPTO_PASSWORD          "tw_crypto_password"
 #define TW_DATA_BLK_DEVICE          "tw_data_blk_device"  // Original block device - not decrypted
 #define TW_SDEXT_DISABLE_EXT4       "tw_sdext_disable_ext4"
+#define TW_MILITARY_TIME            "tw_military_time"
 
 // Also used:
 //   tw_boot_is_mountable