diff --git a/src/wp-admin/network.php b/src/wp-admin/network.php
index 53cfe450eb..10453145bf 100644
--- a/src/wp-admin/network.php
+++ b/src/wp-admin/network.php
@@ -223,11 +223,19 @@ function network_step1( $errors = false ) {
 		<table class="form-table">
 			<tr>
 				<th><label><input type="radio" name="subdomain_install" value="1"<?php checked( $subdomain_install ); ?> /> <?php _e( 'Sub-domains' ); ?></label></th>
-				<td><?php printf( _x( 'like <code>site1.%1$s</code> and <code>site2.%1$s</code>', 'subdomain examples' ), $hostname ); ?></td>
+				<td><?php printf(
+					/* translators: 1: hostname */
+					_x( 'like <code>site1.%1$s</code> and <code>site2.%1$s</code>', 'subdomain examples' ),
+					$hostname
+				); ?></td>
 			</tr>
 			<tr>
 				<th><label><input type="radio" name="subdomain_install" value="0"<?php checked( ! $subdomain_install ); ?> /> <?php _e( 'Sub-directories' ); ?></label></th>
-				<td><?php printf( _x( 'like <code>%1$s/site1</code> and <code>%1$s/site2</code>', 'subdirectory examples' ), $hostname ); ?></td>
+				<td><?php printf(
+					/* translators: 1: hostname */
+					_x( 'like <code>%1$s/site1</code> and <code>%1$s/site2</code>', 'subdirectory examples' ),
+					$hostname
+				); ?></td>
 			</tr>
 		</table>
 
diff --git a/src/wp-admin/network/site-new.php b/src/wp-admin/network/site-new.php
index e194e8d3f9..4aebcf0272 100644
--- a/src/wp-admin/network/site-new.php
+++ b/src/wp-admin/network/site-new.php
@@ -85,13 +85,21 @@ if ( isset($_REQUEST['action']) && 'add-site' == $_REQUEST['action'] ) {
 	$wpdb->hide_errors();
 	$id = wpmu_create_blog( $newdomain, $path, $title, $user_id , array( 'public' => 1 ), $current_site->id );
 	$wpdb->show_errors();
-	if ( !is_wp_error( $id ) ) {
-		if ( !is_super_admin( $user_id ) && !get_user_option( 'primary_blog', $user_id ) )
+	if ( ! is_wp_error( $id ) ) {
+		if ( ! is_super_admin( $user_id ) && !get_user_option( 'primary_blog', $user_id ) ) {
 			update_user_option( $user_id, 'primary_blog', $id, true );
-		$content_mail = sprintf( __( 'New site created by %1$s
+		}
+
+		$content_mail = sprintf(
+			/* translators: 1: user login, 2: site url, 3: site name/title */
+			__( 'New site created by %1$s
 
 Address: %2$s
-Name: %3$s' ), $current_user->user_login , get_site_url( $id ), wp_unslash( $title ) );
+Name: %3$s' ),
+			$current_user->user_login,
+			get_site_url( $id ),
+			wp_unslash( $title )
+		);
 		wp_mail( get_site_option('admin_email'), sprintf( __( '[%s] New Site Created' ), $current_site->site_name ), $content_mail, 'From: "Site Admin" <' . get_site_option( 'admin_email' ) . '>' );
 		wpmu_welcome_notification( $id, $user_id, $password, $title, array( 'public' => 1 ) );
 		wp_redirect( add_query_arg( array( 'update' => 'added', 'id' => $id ), 'site-new.php' ) );
@@ -104,7 +112,12 @@ Name: %3$s' ), $current_user->user_login , get_site_url( $id ), wp_unslash( $tit
 if ( isset($_GET['update']) ) {
 	$messages = array();
 	if ( 'added' == $_GET['update'] )
-		$messages[] = sprintf( __( 'Site added. <a href="%1$s">Visit Dashboard</a> or <a href="%2$s">Edit Site</a>' ), esc_url( get_admin_url( absint( $_GET['id'] ) ) ), network_admin_url( 'site-info.php?id=' . absint( $_GET['id'] ) ) );
+		$messages[] = sprintf(
+			/* translators: 1: dashboard url, 2: network admin edit url */
+			__( 'Site added. <a href="%1$s">Visit Dashboard</a> or <a href="%2$s">Edit Site</a>' ),
+			esc_url( get_admin_url( absint( $_GET['id'] ) ) ),
+			network_admin_url( 'site-info.php?id=' . absint( $_GET['id'] ) )
+		);
 }
 
 $title = __('Add New Site');
diff --git a/src/wp-admin/network/upgrade.php b/src/wp-admin/network/upgrade.php
index 5bb997dd39..719faad340 100644
--- a/src/wp-admin/network/upgrade.php
+++ b/src/wp-admin/network/upgrade.php
@@ -63,10 +63,19 @@ switch ( $action ) {
 			$siteurl = site_url();
 			$upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
 			restore_current_blog();
+
 			echo "<li>$siteurl</li>";
+
 			$response = wp_remote_get( $upgrade_url, array( 'timeout' => 120, 'httpversion' => '1.1' ) );
-			if ( is_wp_error( $response ) )
-				wp_die( sprintf( __( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: <em>%2$s</em>' ), $siteurl, $response->get_error_message() ) );
+			if ( is_wp_error( $response ) ) {
+				wp_die( sprintf(
+					/* translators: 1: site url, 2: server error message */
+					__( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: %2$s' ),
+					$siteurl,
+					'<em>' . $response->get_error_message() . '</em>'
+				) );
+			}
+
 			/**
 			 * Fires after the Multisite DB upgrade for each site is complete.
 			 *
diff --git a/src/wp-admin/network/users.php b/src/wp-admin/network/users.php
index 23871f6e79..bc9eddf450 100644
--- a/src/wp-admin/network/users.php
+++ b/src/wp-admin/network/users.php
@@ -57,7 +57,11 @@ function confirm_delete_users( $users ) {
 
 			if ( ! empty( $blogs ) ) {
 				?>
-				<td><fieldset><p><legend><?php printf( __( 'What should be done with content owned by %s?' ), '<em>' . $delete_user->user_login . '</em>' ); ?></legend></p>
+				<td><fieldset><p><legend><?php printf(
+					/* translators: user login */
+					__( 'What should be done with content owned by %s?' ),
+					'<em>' . $delete_user->user_login . '</em>'
+				); ?></legend></p>
 				<?php
 				foreach ( (array) $blogs as $key => $details ) {
 					$blog_users = get_users( array( 'blog_id' => $details->userblog_id, 'fields' => array( 'ID', 'user_login' ) ) );