diff --git a/src/Symfony/Bridge/Monolog/composer.json b/src/Symfony/Bridge/Monolog/composer.json
index 500a9f57c4..433e0e103f 100644
--- a/src/Symfony/Bridge/Monolog/composer.json
+++ b/src/Symfony/Bridge/Monolog/composer.json
@@ -24,6 +24,9 @@
         "symfony/console": "~2.4|~3.0.0",
         "symfony/event-dispatcher": "~2.2|~3.0.0"
     },
+    "conflict": {
+        "symfony/http-kernel": ">=3.0"
+    },
     "suggest": {
         "symfony/http-kernel": "For using the debugging handlers together with the response life cycle of the HTTP kernel.",
         "symfony/console": "For the possibility to show log messages in console commands depending on verbosity settings. You need version ~2.3 of the console for it.",