diff --git a/components/lib/dialog/Dialog.js b/components/lib/dialog/Dialog.js
index f762797876..e051f0fd43 100644
--- a/components/lib/dialog/Dialog.js
+++ b/components/lib/dialog/Dialog.js
@@ -291,13 +291,15 @@ export const Dialog = React.forwardRef((props, ref) => {
     const disableDocumentSettings = () => {
         unbindGlobalListeners();
 
+        const isMaximized = props.maximizable && maximized;
+
         if (props.modal) {
-            let hasBlockScroll = document.primeDialogParams && document.primeDialogParams.some((param) => param.hasBlockScroll);
+            const hasBlockScroll = document.primeDialogParams && document.primeDialogParams.some((param) => param.hasBlockScroll);
 
-            if (hasBlockScroll) {
+            if (hasBlockScroll || isMaximized) {
                 DomHandler.removeClass(document.body, 'p-overflow-hidden');
             }
-        } else if (props.blockScroll || (props.maximizable && maximized)) {
+        } else if (props.blockScroll || isMaximized) {
             DomHandler.removeClass(document.body, 'p-overflow-hidden');
         }
     };
@@ -560,49 +562,49 @@ export const Dialog = React.forwardRef((props, ref) => {
 Dialog.displayName = 'Dialog';
 Dialog.defaultProps = {
     __TYPE: 'Dialog',
-    id: null,
-    header: null,
-    footer: null,
-    visible: false,
-    position: 'center',
-    draggable: true,
-    resizable: true,
-    modal: true,
-    onHide: null,
-    onShow: null,
-    headerStyle: null,
-    headerClassName: null,
-    contentStyle: null,
-    contentClassName: null,
-    closeOnEscape: true,
-    dismissableMask: false,
-    rtl: false,
-    closable: true,
-    style: null,
-    className: null,
-    maskStyle: null,
-    maskClassName: null,
-    showHeader: true,
     appendTo: null,
+    ariaCloseIconLabel: null,
     baseZIndex: 0,
-    maximizable: false,
     blockScroll: false,
-    icons: null,
-    ariaCloseIconLabel: null,
+    breakpoints: null,
+    className: null,
+    closable: true,
+    closeOnEscape: true,
+    contentClassName: null,
+    contentStyle: null,
+    dismissableMask: false,
+    draggable: true,
     focusOnShow: true,
-    minX: 0,
-    minY: 0,
+    footer: null,
+    header: null,
+    headerClassName: null,
+    headerStyle: null,
+    icons: null,
+    id: null,
     keepInViewport: true,
+    maskClassName: null,
+    maskStyle: null,
+    maximizable: false,
     maximized: false,
-    breakpoints: null,
-    transitionOptions: null,
-    onMaximize: null,
-    onDragStart: null,
+    minX: 0,
+    minY: 0,
+    modal: true,
+    onClick: null,
     onDrag: null,
     onDragEnd: null,
-    onResizeStart: null,
+    onDragStart: null,
+    onHide: null,
+    onMaskClick: null,
+    onMaximize: null,
     onResize: null,
     onResizeEnd: null,
-    onClick: null,
-    onMaskClick: null
+    onResizeStart: null,
+    onShow: null,
+    position: 'center',
+    resizable: true,
+    rtl: false,
+    showHeader: true,
+    style: null,
+    transitionOptions: null,
+    visible: false
 };
diff --git a/components/lib/dialog/dialog.d.ts b/components/lib/dialog/dialog.d.ts
index 5d971f4f08..fa0c6f8838 100644
--- a/components/lib/dialog/dialog.d.ts
+++ b/components/lib/dialog/dialog.d.ts
@@ -17,52 +17,52 @@ interface DialogMaximizeParams {
 }
 
 export interface DialogProps {
-    id?: string;
-    header?: DialogTemplateType;
-    footer?: DialogTemplateType;
-    visible?: boolean;
-    position?: DialogPositionType;
-    draggable?: boolean;
-    resizable?: boolean;
-    modal?: boolean;
-    headerStyle?: object;
-    headerClassName?: string;
-    contentStyle?: object;
-    contentClassName?: string;
-    closeOnEscape?: boolean;
-    dismissableMask?: boolean;
-    rtl?: boolean;
-    closable?: boolean;
-    style?: object;
-    className?: string;
-    maskStyle?: object;
-    maskClassName?: string;
-    showHeader?: boolean;
     appendTo?: DialogAppendToType;
+    ariaCloseIconLabel?: string;
     baseZIndex?: number;
-    maximizable?: boolean;
     blockScroll?: boolean;
-    icons?: DialogTemplateType;
-    ariaCloseIconLabel?: string;
+    breakpoints?: DialogBreakpoints;
+    children?: React.ReactNode;
+    className?: string;
+    closable?: boolean;
+    closeOnEscape?: boolean;
+    contentClassName?: string;
+    contentStyle?: object;
+    dismissableMask?: boolean;
+    draggable?: boolean;
     focusOnShow?: boolean;
-    minX?: number;
-    minY?: number;
+    footer?: DialogTemplateType;
+    header?: DialogTemplateType;
+    headerClassName?: string;
+    headerStyle?: object;
+    icons?: DialogTemplateType;
+    id?: string;
     keepInViewport?: boolean;
+    maskClassName?: string;
+    maskStyle?: object;
+    maximizable?: boolean;
     maximized?: boolean;
-    breakpoints?: DialogBreakpoints;
+    minX?: number;
+    minY?: number;
+    modal?: boolean;
+    position?: DialogPositionType;
+    resizable?: boolean;
+    rtl?: boolean;
+    showHeader?: boolean;
+    style?: object;
     transitionOptions?: CSSTransitionProps;
-    onMaximize?(e: DialogMaximizeParams): void;
-    onDragStart?(e: React.DragEvent<HTMLElement>): void;
+    visible?: boolean;
+    onClick?(e: React.MouseEvent<HTMLElement>): void;
     onDrag?(e: React.DragEvent<HTMLElement>): void;
     onDragEnd?(e: React.DragEvent<HTMLElement>): void;
-    onResizeStart?(e: React.MouseEvent<HTMLElement>): void;
+    onDragStart?(e: React.DragEvent<HTMLElement>): void;
+    onHide(): void;
+    onMaskClick?(e: React.MouseEvent<HTMLElement>): void;
+    onMaximize?(e: DialogMaximizeParams): void;
     onResize?(e: React.MouseEvent<HTMLElement>): void;
     onResizeEnd?(e: React.MouseEvent<HTMLElement>): void;
-    onHide(): void;
+    onResizeStart?(e: React.MouseEvent<HTMLElement>): void;
     onShow?(): void;
-    onMaskClick?(e: React.MouseEvent<HTMLElement>): void;
-    onClick?(e: React.MouseEvent<HTMLElement>): void;
-    children?: React.ReactNode;
 }
 
 export declare class Dialog extends React.Component<DialogProps, any> {