diff --git a/src/config/constants.js b/src/config/constants.js
index c63ff2f8..73ebe76d 100644
--- a/src/config/constants.js
+++ b/src/config/constants.js
@@ -12,6 +12,11 @@ const boolFromEnv = (key: string): boolean => {
 
 const stringFromEnv = (key: string, def: string): string => process.env[key] || def
 
+// Size
+
+export const MIN_HEIGHT = intFromEnv('LEDGER_MIN_HEIGHT', 768)
+export const MIN_WIDTH = intFromEnv('LEDGER_MIN_WIDTH', 1024)
+
 // time and delays...
 
 export const GET_CALLS_TIMEOUT = intFromEnv('GET_CALLS_TIMEOUT', 30 * 1000)
diff --git a/src/main/app.js b/src/main/app.js
index 116a4307..65a224ac 100644
--- a/src/main/app.js
+++ b/src/main/app.js
@@ -2,6 +2,7 @@
 
 import { app, BrowserWindow, Menu, screen } from 'electron'
 import debounce from 'lodash/debounce'
+import { MIN_HEIGHT, MIN_WIDTH } from 'config/constants'
 
 import menu from 'main/menu'
 import db from 'helpers/db'
@@ -67,9 +68,6 @@ const defaultWindowOptions = {
 }
 
 function createMainWindow() {
-  const MIN_HEIGHT = 768
-  const MIN_WIDTH = 1024
-
   const savedDimensions = db.getIn('settings', 'window.MainWindow.dimensions', {})
   const savedPositions = db.getIn('settings', 'window.MainWindow.positions', null)