diff --git a/composer.json b/composer.json
index 3a52779..0211968 100644
--- a/composer.json
+++ b/composer.json
@@ -22,6 +22,9 @@
         "php": ">=5.3.0",
         "roundcube/plugin-installer": ">=0.1.3"
     },
+	"conflict": {
+		"elm/identity_smtp": "*"
+	},
 	"support": {
 		"issues": "https://bitbucket.org/BoresExpress/ident_switch/issues"
 	},