diff --git a/pages/components/AnnouncementsList/index.js b/pages/components/AnnouncementsList/index.js
index f6ecea9..44faf25 100644
--- a/pages/components/AnnouncementsList/index.js
+++ b/pages/components/AnnouncementsList/index.js
@@ -94,7 +94,7 @@ class AnnouncementsList extends React.Component
 			<div className="feed">
 				<div className="feed_list">
 					<Slider { ...settings }>
-						{ announcements.map(( announcement, index ) => (
+						{ announcements !== undefined && announcements !== null && announcements.map(( announcement, index ) => (
 							<div className="feed_item" key={ index }>
 								<p className="item_title">{ announcement.title }</p>
 								<p className="item_desc" dangerouslySetInnerHTML={{ __html: announcement.content }}></p>
diff --git a/pages/components/Header/NotificationsList/index.js b/pages/components/Header/NotificationsList/index.js
index 5c77599..b414167 100644
--- a/pages/components/Header/NotificationsList/index.js
+++ b/pages/components/Header/NotificationsList/index.js
@@ -15,7 +15,12 @@ export default class NotificationsList extends React.Component
 	render() 
 	{
 		const { events } = this.props;
-		const limit = window.innerWidth > 768 ? 5 : 3;
+		let limit = 5;
+
+		if (typeof window !== "undefined")
+		{
+			limit = window.innerWidth > 768 ? 5 : 3;
+		}
 
 		return (
 			<>
diff --git a/pages/index.js b/pages/index.js
index a77260b..14bed39 100644
--- a/pages/index.js
+++ b/pages/index.js
@@ -225,7 +225,7 @@ class IndexPage extends React.Component
 								<div className="table_cell">Следующий платеж</div>
 								<div className="table_cell">Дополнительные услуги</div>
 							</div>
-							{ contracts !== null && (
+							{ contracts !== undefined && contracts !== null && (
 								<>
 									{ contracts.length > 0 ? contracts.map((contract, index) => (
 										<Link href={`/contract/${ contract.number }/payments`} key={ index }>
diff --git a/pages/support/components/RequestFile/index.js b/pages/support/components/RequestFile/index.js
index f7f1b02..8a0c681 100644
--- a/pages/support/components/RequestFile/index.js
+++ b/pages/support/components/RequestFile/index.js
@@ -36,12 +36,14 @@ export default class RequestFile extends React.Component
 
 		return (
 			<div className="row interactive" onClick={ this._handle_onDownloadFile }>
-				<p className="doc_name i-pdf extension" data-format={ file.doc_extension } style={{ flexDirection: "column", display: "flex", alignItems: "flex-start", }}>
-					{ file.doc_name }
-					<span style={{ position: "relative", color: downloading ? "#8e94a780" : "#8e94a7", }}>
-						Скачать документ { downloading ? (<SpinnerCircular size={ 20 } thickness={ 100 } speed={ 100 } color="rgba(236, 239, 244, 1)" secondaryColor="rgba(28, 1, 169, 1)" style={{ position: "absolute", right: 0, marginRight: "-26px", top: 0, }} />) : null }
-					</span>
-				</p>
+				{ file !== undefined && file !== null && (
+					<p className="doc_name i-pdf extension" data-format={ file.doc_extension } style={{ flexDirection: "column", display: "flex", alignItems: "flex-start", }}>
+						{ file.doc_name }
+						<span style={{ position: "relative", color: downloading ? "#8e94a780" : "#8e94a7", }}>
+							Скачать документ { downloading ? (<SpinnerCircular size={ 20 } thickness={ 100 } speed={ 100 } color="rgba(236, 239, 244, 1)" secondaryColor="rgba(28, 1, 169, 1)" style={{ position: "absolute", right: 0, marginRight: "-26px", top: 0, }} />) : null }
+						</span>
+					</p>
+				) }
 			</div>
 		)
 	}