diff --git a/plinth/modules/avahi/__init__.py b/plinth/modules/avahi/__init__.py
index d01bc6a2f..581b46490 100644
--- a/plinth/modules/avahi/__init__.py
+++ b/plinth/modules/avahi/__init__.py
@@ -82,7 +82,8 @@ def init():
     """Intialize the service discovery module."""
     global app
     app = AvahiApp()
-    app.set_enabled(True)
+    if app.is_enabled():
+        app.set_enabled(True)
 
 
 def setup(helper, old_version=None):
diff --git a/plinth/modules/datetime/__init__.py b/plinth/modules/datetime/__init__.py
index a6f5974e4..fe83dcb5d 100644
--- a/plinth/modules/datetime/__init__.py
+++ b/plinth/modules/datetime/__init__.py
@@ -68,7 +68,8 @@ def init():
     """Intialize the date/time module."""
     global app
     app = DateTimeApp()
-    app.set_enabled(True)
+    if app.is_enabled():
+        app.set_enabled(True)
 
 
 def setup(helper, old_version=None):
diff --git a/plinth/modules/ssh/__init__.py b/plinth/modules/ssh/__init__.py
index 56019ad1a..df1611b3a 100644
--- a/plinth/modules/ssh/__init__.py
+++ b/plinth/modules/ssh/__init__.py
@@ -75,7 +75,8 @@ def init():
     """Intialize the ssh module."""
     global app
     app = SSHApp()
-    app.set_enabled(True)
+    if app.is_enabled():
+        app.set_enabled(True)
 
 
 def setup(helper, old_version=None):