diff --git a/lib/ConvertApi/Task.php b/lib/ConvertApi/Task.php
index cd9b8d7..fca394e 100644
--- a/lib/ConvertApi/Task.php
+++ b/lib/ConvertApi/Task.php
@@ -46,12 +46,12 @@ private function normalizedParams()
 
         foreach ($this->params as $key => $val)
         {
-            switch($key) {
-                case 'File':
+            switch(true) {
+                case $key != 'StoreFile' && preg_match('/File$/', $key):
                     $result[$key] = FileParam::build($val);
                     break;
 
-                case 'Files':
+                case $key == 'Files':
                     $result[$key] = $this->filesBatch($val);
                     break;
 
diff --git a/tests/ConvertApi/ConvertApiTest.php b/tests/ConvertApi/ConvertApiTest.php
index 4429f40..3cb76f5 100644
--- a/tests/ConvertApi/ConvertApiTest.php
+++ b/tests/ConvertApi/ConvertApiTest.php
@@ -159,6 +159,18 @@ public function testChainedConversion()
         $this->assertEquals('test.zip', $result->getFile()->getFileName());
     }
 
+    public function testCompare()
+    {
+        $params = [
+            'File' => 'examples/files/test.docx',
+            'CompareFile' => 'examples/files/test.docx'
+        ];
+
+        $result = ConvertApi::convert('compare', $params);
+
+        $this->assertEquals('test.docx', $result->getFile()->getFileName());
+    }
+
     public function testApiError()
     {
         $params = ['Url' => 'https://www.w3.org/TR/PNG/iso_8859-1.txt'];