diff --git a/packages/block-editor/src/components/block-removal-warning-modal/index.js b/packages/block-editor/src/components/block-removal-warning-modal/index.js
index fca8098c4cd398..2f716e875fb604 100644
--- a/packages/block-editor/src/components/block-removal-warning-modal/index.js
+++ b/packages/block-editor/src/components/block-removal-warning-modal/index.js
@@ -53,10 +53,18 @@ export function BlockRemovalWarningModal( { rules } ) {
 		>
 			<p>{ message }</p>
 			<HStack justify="right">
-				<Button variant="tertiary" onClick={ clearBlockRemovalPrompt }>
+				<Button
+					variant="tertiary"
+					onClick={ clearBlockRemovalPrompt }
+					__next40pxDefaultSize
+				>
 					{ __( 'Cancel' ) }
 				</Button>
-				<Button variant="primary" onClick={ onConfirmRemoval }>
+				<Button
+					variant="primary"
+					onClick={ onConfirmRemoval }
+					__next40pxDefaultSize
+				>
 					{ __( 'Delete' ) }
 				</Button>
 			</HStack>
diff --git a/packages/block-library/src/navigation/edit/navigation-menu-delete-control.js b/packages/block-library/src/navigation/edit/navigation-menu-delete-control.js
index 567e2a79abf4e5..dcef345581a765 100644
--- a/packages/block-library/src/navigation/edit/navigation-menu-delete-control.js
+++ b/packages/block-library/src/navigation/edit/navigation-menu-delete-control.js
@@ -41,6 +41,7 @@ export default function NavigationMenuDeleteControl( { onDelete } ) {
 						setIsConfirmDialogVisible( false );
 					} }
 					confirmButtonText={ __( 'Delete' ) }
+					size="medium"
 				>
 					{ __(
 						'Are you sure you want to delete this Navigation Menu?'
diff --git a/packages/editor/src/dataviews/actions/delete-post.tsx b/packages/editor/src/dataviews/actions/delete-post.tsx
index e6af8e963d5878..381c2964f943f6 100644
--- a/packages/editor/src/dataviews/actions/delete-post.tsx
+++ b/packages/editor/src/dataviews/actions/delete-post.tsx
@@ -78,6 +78,7 @@ const deletePostAction: Action< Post > = {
 						onClick={ closeModal }
 						disabled={ isBusy }
 						accessibleWhenDisabled
+						__next40pxDefaultSize
 					>
 						{ __( 'Cancel' ) }
 					</Button>
@@ -95,6 +96,7 @@ const deletePostAction: Action< Post > = {
 						isBusy={ isBusy }
 						disabled={ isBusy }
 						accessibleWhenDisabled
+						__next40pxDefaultSize
 					>
 						{ __( 'Delete' ) }
 					</Button>