diff --git a/modoboa_installer/scripts/modoboa.py b/modoboa_installer/scripts/modoboa.py
index 835ebe4..8c0cf8e 100644
--- a/modoboa_installer/scripts/modoboa.py
+++ b/modoboa_installer/scripts/modoboa.py
@@ -248,7 +248,7 @@ class Modoboa(base.Installer):
             "dovecot_mailboxes_owner": (
                 self.config.get("dovecot", "mailboxes_owner")),
             "opendkim_user": self.config.get("opendkim", "user"),
-            "dkim_user":  "_rspamd" if self.config.getboolean("rspamd", "enabled") else self.config.get("opendkim", "user")
+            "dkim_user": "_rspamd" if self.config.getboolean("rspamd", "enabled") else self.config.get("opendkim", "user"),
             "minutes": random.randint(1, 59),
             "hours": f"{random_hour},{random_hour+12}",
             "modoboa_2_2_or_greater": "" if self.modoboa_2_2_or_greater else "#",
diff --git a/run.py b/run.py
index fa8c60c..6f7e689 100755
--- a/run.py
+++ b/run.py
@@ -260,7 +260,6 @@ def main(input_args):
 
     # Show concerned components
     components = []
-    incompatible_app_detected = False
     for section in config.sections():
         if section in ["general", "database", "mysql", "postgres",
                        "certificate", "letsencrypt", "backup"]:
@@ -268,10 +267,10 @@ def main(input_args):
         if (config.has_option(section, "enabled") and
                 not config.getboolean(section, "enabled")):
             continue
-        incompatible_app_detected = utils.check_app_compatibility(section, config)
+        incompatible_app_detected = not utils.check_app_compatibility(section, config)
+        if incompatible_app_detected:
+            sys.exit(0)
         components.append(section)
-    if incompatible_app_detected:
-        sys.exit(0)
     utils.printcolor(" ".join(components), utils.YELLOW)
     if not args.force:
         answer = utils.user_input("Do you confirm? (Y/n) ")