diff --git a/Resources/config/formatters.xml b/Resources/config/formatters.xml
index 5cd711f..07650f9 100644
--- a/Resources/config/formatters.xml
+++ b/Resources/config/formatters.xml
@@ -12,7 +12,7 @@
     </parameters>
 
     <services>
-        <service id="nelmio_api_doc.formatter.abstract_formatter" class="%nelmio_api_doc.formatter.abstract_formatter.class%" />
+        <service id="nelmio_api_doc.formatter.abstract_formatter" class="%nelmio_api_doc.formatter.abstract_formatter.class%" abstract="true" />
         <service id="nelmio_api_doc.formatter.markdown_formatter" class="%nelmio_api_doc.formatter.markdown_formatter.class%"
             parent="nelmio_api_doc.formatter.abstract_formatter" />
         <service id="nelmio_api_doc.formatter.simple_formatter" class="%nelmio_api_doc.formatter.simple_formatter.class%"