diff --git a/src/wp-admin/includes/class-wp-site-health.php b/src/wp-admin/includes/class-wp-site-health.php
index f20bc947c3..b3faee728c 100644
--- a/src/wp-admin/includes/class-wp-site-health.php
+++ b/src/wp-admin/includes/class-wp-site-health.php
@@ -1115,7 +1115,7 @@ class WP_Site_Health {
 			'test'        => 'php_sessions',
 		);
 
-		if ( PHP_SESSION_ACTIVE === session_status() ) {
+		if ( function_exists( 'session_status' ) && PHP_SESSION_ACTIVE === session_status() ) {
 			$result['status'] = 'critical';
 
 			$result['label'] = __( 'An active PHP session was detected' );
diff --git a/src/wp-admin/includes/file.php b/src/wp-admin/includes/file.php
index 7bb04f8fc3..e22292c4f8 100644
--- a/src/wp-admin/includes/file.php
+++ b/src/wp-admin/includes/file.php
@@ -555,7 +555,7 @@ function wp_edit_theme_plugin_file( $args ) {
 			$url = admin_url();
 		}
 
-		if ( PHP_SESSION_ACTIVE === session_status() ) {
+		if ( function_exists( 'session_status' ) && PHP_SESSION_ACTIVE === session_status() ) {
 			// Close any active session to prevent HTTP requests from timing out
 			// when attempting to connect back to the site.
 			session_write_close();