diff --git a/composer.json b/composer.json
index b30882f..58c46b3 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,8 @@
         "monolog/monolog": "~1.15",
         "ptcinc/solr-php-client": "^1.0",
         "symfony/process": "^3.2 || ^4",
-        "tractorcow/silverstripe-proxy-db": "~0.1"
+        "tractorcow/silverstripe-proxy-db": "~0.1",
+        "ext-curl": "*"
     },
     "require-dev": {
         "silverstripe/cms": "^4.0",
diff --git a/src/Search/Services/SearchableService.php b/src/Search/Services/SearchableService.php
index a621a75..421d06f 100644
--- a/src/Search/Services/SearchableService.php
+++ b/src/Search/Services/SearchableService.php
@@ -151,12 +151,12 @@ class SearchableService
                 // Anonymous member canView() for indexing
                 if (!$this->classSkipsCanViewCheck($objClass)) {
                     $value = Member::actAs(null, function () use ($obj) {
-                        return $obj->canView();
+                        return (bool) $obj->canView();
                     });
                 }
             } else {
                 // Current member canView() check for retrieving search results
-                $value = $obj->canView();
+                $value = (bool) $obj->canView();
             }
         }
         $this->extend('updateIsSearchable', $obj, $indexing, $value);
diff --git a/src/Utils/WebDAV.php b/src/Utils/WebDAV.php
index a3a51ad..1243261 100644
--- a/src/Utils/WebDAV.php
+++ b/src/Utils/WebDAV.php
@@ -22,10 +22,14 @@ class WebDAV
         }
 
         $ch = self::curl_init($url, 'PROPFIND');
-        
-        $res = curl_exec($ch);
+
+        curl_exec($ch);
         $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 
+        $err = curl_error($ch);
+
+        curl_close($ch);
+
         if ($code == 404) {
             return false;
         }
@@ -33,8 +37,6 @@ class WebDAV
             return true;
         }
 
-        $err = curl_error($ch);
-
         user_error("Got error from webdav server - " . $err, E_USER_ERROR);
     }
 
@@ -42,8 +44,9 @@ class WebDAV
     {
         $ch = self::curl_init(rtrim($url, '/') . '/', 'MKCOL');
 
-        $res = curl_exec($ch);
+        curl_exec($ch);
         $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
 
         return $code == 201;
     }
@@ -58,10 +61,12 @@ class WebDAV
 
         curl_setopt($ch, CURLOPT_INFILE, $handle);
 
-        $res = curl_exec($ch);
+        curl_exec($ch);
         fclose($handle);
+        $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
 
-        return curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        return $code;
     }
 
     public static function upload_from_string($string, $url)