diff --git a/src/constants.ts b/src/constants.ts
index 31d560a..b0af154 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,4 +1,4 @@
 export const CONFIG_DIR: string = `${Deno.env.get("HOME")}/.openbsd-up`;
 export const DB_PATH: string = `${CONFIG_DIR}/state.sqlite`;
 export const LOGS_DIR: string = `${CONFIG_DIR}/logs`;
-export const EMPTY_DISK_SIZE_KB = 100;
+export const EMPTY_DISK_SIZE_KB: number = 100;