diff --git a/src/Resources/config/doctrine/Collection.orm.xml b/src/Resources/config/doctrine/Collection.orm.xml
index fcf776df..27a6f089 100644
--- a/src/Resources/config/doctrine/Collection.orm.xml
+++ b/src/Resources/config/doctrine/Collection.orm.xml
@@ -17,7 +17,7 @@
 
         <field name="type" column="type" type="string" length="250" nullable="true"/>
 
-        <many-to-many field="pages" target-entity="BitBag\SyliusCmsPlugin\Entity\PageInterface">
+        <many-to-many field="pages" target-entity="BitBag\SyliusCmsPlugin\Entity\PageInterface" inversed-by="collections">
             <cascade>
                 <cascade-all />
             </cascade>
@@ -31,7 +31,7 @@
             </join-table>
         </many-to-many>
 
-        <many-to-many field="blocks" target-entity="BitBag\SyliusCmsPlugin\Entity\BlockInterface">
+        <many-to-many field="blocks" target-entity="BitBag\SyliusCmsPlugin\Entity\BlockInterface" inversed-by="collections">
             <join-table name="bitbag_cms_section_blocks">
                 <cascade>
                     <cascade-all />
@@ -45,7 +45,7 @@
             </join-table>
         </many-to-many>
 
-        <many-to-many field="media" target-entity="BitBag\SyliusCmsPlugin\Entity\MediaInterface">
+        <many-to-many field="media" target-entity="BitBag\SyliusCmsPlugin\Entity\MediaInterface" inversed-by="collections">
             <cascade>
                 <cascade-all />
             </cascade>