diff --git a/README.md b/README.md
index 4a0ec05..cc59bb3 100644
--- a/README.md
+++ b/README.md
@@ -98,8 +98,8 @@ Name | Type | Required | Default value | Description
 {
   width?: number;
   height?: number;
-  screenLayout?: {
-    layout: xs | sm | md | lg | xl;
+  screenLayout: {
+    layout: xs | sm | md | lg | xl | undefined;
 
     isXs: boolean;
     isSm: boolean;
diff --git a/src/constants/defaultScreenLayout.ts b/src/constants/defaultScreenLayout.ts
new file mode 100644
index 0000000..d393ce0
--- /dev/null
+++ b/src/constants/defaultScreenLayout.ts
@@ -0,0 +1,28 @@
+import { ScreenLayout } from '../interfaces';
+
+/**
+ * Default screen layout.
+ */
+const defaultScreenLayout: ScreenLayout = {
+  layout: undefined,
+
+  isXs: false,
+  isSm: false,
+  isMd: false,
+  isLg: false,
+  isXl: false,
+
+  isXsOrBelow: false,
+  isSmOrBelow: false,
+  isMdOrBelow: false,
+  isLgOrBelow: false,
+  isXlOrBelow: false,
+
+  isXsOrAbove: false,
+  isSmOrAbove: false,
+  isMdOrAbove: false,
+  isLgOrAbove: false,
+  isXlOrAbove: false,
+};
+
+export default defaultScreenLayout;
diff --git a/src/interfaces/index.ts b/src/interfaces/index.ts
index cb1bf89..7d71200 100644
--- a/src/interfaces/index.ts
+++ b/src/interfaces/index.ts
@@ -32,7 +32,7 @@ export interface GetCurrentLayoutOptions {
  * Result for getCurrentLayout.
  */
 export interface ScreenLayout {
-  layout: LayoutEnum;
+  layout?: LayoutEnum;
 
   isXs: boolean;
   isSm: boolean;
@@ -67,7 +67,7 @@ export interface GetWindowSizeOptions {
 export interface GetWindowSizeResult {
   width?: number;
   height?: number;
-  screenLayout?: ScreenLayout;
+  screenLayout: ScreenLayout;
 }
 
 /**
diff --git a/src/utils/getCurrentLayout.ts b/src/utils/getCurrentLayout.ts
index a7f4593..f37366f 100644
--- a/src/utils/getCurrentLayout.ts
+++ b/src/utils/getCurrentLayout.ts
@@ -1,31 +1,7 @@
 import { GetCurrentLayoutOptions, ScreenLayout } from '../interfaces';
+import defaultScreenLayout from '../constants/defaultScreenLayout';
 import LayoutEnum from '../constants/layoutEnum';
 
-/**
- * Default return options.
- */
-const defaultReturn: ScreenLayout = {
-  layout: LayoutEnum.xs,
-
-  isXs: false,
-  isSm: false,
-  isMd: false,
-  isLg: false,
-  isXl: false,
-
-  isXsOrBelow: false,
-  isSmOrBelow: false,
-  isMdOrBelow: false,
-  isLgOrBelow: false,
-  isXlOrBelow: false,
-
-  isXsOrAbove: false,
-  isSmOrAbove: false,
-  isMdOrAbove: false,
-  isLgOrAbove: false,
-  isXlOrAbove: false,
-};
-
 /**
  * Returns the current layout.
  * @param param0 options
@@ -36,7 +12,7 @@ const getCurrentLayout = ({
 }: GetCurrentLayoutOptions): ScreenLayout => {
   if (width <= breakpoints.sm) {
     return {
-      ...defaultReturn,
+      ...defaultScreenLayout,
 
       // Current layout
       layout: LayoutEnum.xs,
@@ -58,7 +34,7 @@ const getCurrentLayout = ({
 
   if (width < breakpoints.md) {
     return {
-      ...defaultReturn,
+      ...defaultScreenLayout,
 
       // Current layout
       layout: LayoutEnum.sm,
@@ -80,7 +56,7 @@ const getCurrentLayout = ({
 
   if (width < breakpoints.lg) {
     return {
-      ...defaultReturn,
+      ...defaultScreenLayout,
 
       // Current layout
       layout: LayoutEnum.md,
@@ -102,7 +78,7 @@ const getCurrentLayout = ({
 
   if (width < breakpoints.xl) {
     return {
-      ...defaultReturn,
+      ...defaultScreenLayout,
 
       // Current layout
       layout: LayoutEnum.lg,
@@ -123,7 +99,7 @@ const getCurrentLayout = ({
   }
 
   return {
-    ...defaultReturn,
+    ...defaultScreenLayout,
 
     // Current layout
     layout: LayoutEnum.xl,
diff --git a/src/utils/getWindowSize.ts b/src/utils/getWindowSize.ts
index ba29241..7b82ee3 100644
--- a/src/utils/getWindowSize.ts
+++ b/src/utils/getWindowSize.ts
@@ -1,4 +1,5 @@
 import { GetWindowSizeResult, GetWindowSizeOptions } from '../interfaces';
+import defaultScreenLayout from '../constants/defaultScreenLayout';
 import getCurrentLayout from './getCurrentLayout';
 
 /**
@@ -14,7 +15,7 @@ const getWindowSize = ({
     return {
       width: undefined,
       height: undefined,
-      screenLayout: undefined,
+      screenLayout: defaultScreenLayout,
     };
   }