diff --git a/index.js b/index.js
index e0690e5..fbd6815 100644
--- a/index.js
+++ b/index.js
@@ -35,8 +35,8 @@ module.exports = function (options) {
   }
 
   function validateState() {
-    var isValid = state && hasBounds();
-    if (isValid && state.displayBounds) {
+    var isValid = state && (hasBounds() || state.isMaximized || state.isFullScreen);
+    if (hasBounds() && state.displayBounds) {
       // Check if the display where the window was last open is still available
       var displayBounds = screen.getDisplayMatching(state).bounds;
       isValid = deepEqual(state.displayBounds, displayBounds, {strict: true});
diff --git a/test.js b/test.js
index cd50da3..30a8e5c 100644
--- a/test.js
+++ b/test.js
@@ -47,6 +47,52 @@ test('tries to read state file from the configured source', t => {
   jsonfile.readFileSync.restore();
 });
 
+test('considers the state invalid if without bounds', t => {
+  const jsonfile = require('jsonfile');
+  sinon.stub(jsonfile, 'readFileSync').returns({
+    width: 100
+  });
+
+  const state = require('./')({
+    defaultWidth: 200
+  });
+
+  t.not(state.width, 100);
+  jsonfile.readFileSync.restore();
+});
+
+test('considers the state valid if without bounds but isMaximized is true', t => {
+  const jsonfile = require('jsonfile');
+  sinon.stub(jsonfile, 'readFileSync').returns({
+    isMaximized: true,
+    width: 100
+  });
+
+  const state = require('./')({
+    defaultWidth: 200
+  });
+
+  t.true(state.isMaximized);
+  t.is(state.width, 100);
+  jsonfile.readFileSync.restore();
+});
+
+test('considers the state valid if without bounds but isFullScreen is true', t => {
+  const jsonfile = require('jsonfile');
+  sinon.stub(jsonfile, 'readFileSync').returns({
+    isFullScreen: true,
+    width: 100
+  });
+
+  const state = require('./')({
+    defaultWidth: 200
+  });
+
+  t.true(state.isFullScreen);
+  t.is(state.width, 100);
+  jsonfile.readFileSync.restore();
+});
+
 test('returns the defaults if the state in the file is invalid', t => {
   const jsonfile = require('jsonfile');
   sinon.stub(jsonfile, 'readFileSync').returns({});