Index: src/wp-admin/css/common.css
===================================================================
--- src/wp-admin/css/common.css	(revision 35891)
+++ src/wp-admin/css/common.css	(working copy)
@@ -887,6 +887,10 @@
 	padding: 6px 10px 8px;
 }
 
+.misc-pub-revisions .howto {
+	padding-left: 25px;
+}
+
 .misc-pub-filename {
 	word-wrap: break-word;
 }
Index: src/wp-admin/includes/meta-boxes.php
===================================================================
--- src/wp-admin/includes/meta-boxes.php	(revision 35891)
+++ src/wp-admin/includes/meta-boxes.php	(working copy)
@@ -194,17 +194,11 @@
 	$revisions_to_keep = wp_revisions_to_keep( $post );
 ?>
 <div class="misc-pub-section misc-pub-revisions">
-<?php
-	if ( $revisions_to_keep > 0 && $revisions_to_keep <= $args['args']['revisions_count'] ) {
-		echo '<span title="' . esc_attr( sprintf( __( 'Your site is configured to keep only the last %s revisions.' ),
-			number_format_i18n( $revisions_to_keep ) ) ) . '">';
-		printf( __( 'Revisions: %s' ), '<b>' . number_format_i18n( $args['args']['revisions_count'] ) . '+</b>' );
-		echo '</span>';
-	} else {
-		printf( __( 'Revisions: %s' ), '<b>' . number_format_i18n( $args['args']['revisions_count'] ) . '</b>' );
-	}
-?>
+	<?php printf( __( 'Revisions: %s' ), '<b>' . number_format_i18n( $args['args']['revisions_count'] ) . '</b>' ); ?>
 	<a class="hide-if-no-js" href="<?php echo esc_url( get_edit_post_link( $args['args']['revision_id'] ) ); ?>"><span aria-hidden="true"><?php _ex( 'Browse', 'revisions' ); ?></span> <span class="screen-reader-text"><?php _e( 'Browse revisions' ); ?></span></a>
+	<?php if ( $revisions_to_keep > 0 ) : ?>
+	<span class="howto"><?php printf( __( 'Limit for revisions is set to %s.' ), number_format_i18n( $revisions_to_keep ) ) ?></span>
+	<?php endif; ?>
 </div>
 <?php endif;