diff --git a/Core/FieldHandler/EzBinaryFile.php b/Core/FieldHandler/EzBinaryFile.php
index 8c9e4553..f6645cf4 100644
--- a/Core/FieldHandler/EzBinaryFile.php
+++ b/Core/FieldHandler/EzBinaryFile.php
@@ -54,7 +54,7 @@ public function hashToFieldValue($fieldValue, array $context = array())
      * @param array $context
      * @return array
      *
-     * @todo check out if this works in ezplatform
+     * @todo check if this works in ezplatform
      */
     public function fieldValueToHash($fieldValue, array $context = array())
     {
diff --git a/Resources/doc/DSL/Contents.yml b/Resources/doc/DSL/Contents.yml
index 12d9b3fc..568dbd30 100644
--- a/Resources/doc/DSL/Contents.yml
+++ b/Resources/doc/DSL/Contents.yml
@@ -19,6 +19,7 @@
             alt_text: xyz # Optional, only used for images
             filename: abc # Optional, taken from the actual file if not specified
             mime_type: def # Optional. For ezbinaryfile and ezmedia only. If not specified, the actual file is analyzed using the php function mime_content_type()
+                           # NB: this seems to work only with eZPublish < 5.4 / 2014.11; see bug https://github.com/kaliop-uk/ezmigrationbundle/issues/147
             has_controller: false # Optional. For ezmedia only
             autoplay: false # Optional. For ezmedia only
             loop: false # Optional. For ezmedia only
diff --git a/Tests/dsl/good/UnitTestOK004_content.yml b/Tests/dsl/good/UnitTestOK004_content.yml
index b90fe9d0..baab8eac 100644
--- a/Tests/dsl/good/UnitTestOK004_content.yml
+++ b/Tests/dsl/good/UnitTestOK004_content.yml
@@ -317,7 +317,7 @@
         - ezbinaryfile:
             path: emptyfile.txt
             filename: lol2.txt
-            mime_type: something
+            mime_type: something/else
         - ezmedia:
             path: small.flv
             filename: lol3.flv
@@ -340,6 +340,18 @@
             destinationContentId: 'reference:kmb_test_004_1'
         - ezobjectrelationlist:
             destinationContentIds: [ 'reference:kmb_test_004_1', 'reference:kmb_test_004_2' ]
+    references:
+        -
+            identifier: kmb_test_004_10_mimetype
+            attribute: attributes.ezbinaryfile.mimeType
+
+# Currently fails... See: https://github.com/kaliop-uk/ezmigrationbundle/issues/147
+#-
+#    type: assert
+#    target: reference
+#    identifier: reference:kmb_test_004_10_mimetype
+#    test:
+#        equals: something/else
 
 -
     type: content