diff --git a/config/services.yaml b/config/services.yaml
index 5d6715c..33e3751 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -10,3 +10,7 @@ services:
     Pcm\IconBundle\Twig\Extension\IconExtension:
         public: false
         alias: pcm_icon.icon_extension
+
+    Pcm\IconBundle\Twig\Runtime\IconRuntime:
+        tags:
+            - { name: twig.runtime }