diff --git a/README.md b/README.md
index a3039d9b..41c9c8f2 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 DAVDROID
 ========
 
-Please see the [DAVdroid Web site](http://davdroid.bitfire.at) for
+Please see the [DAVdroid Web site](https://davdroid.bitfire.at) for
 detailled information about DAVdroid.
 
 DAVdroid is licensed under the [GPLv3 License](COPYING).
diff --git a/src/at/bitfire/davdroid/Constants.java b/src/at/bitfire/davdroid/Constants.java
index c6c5f48c..cd0a4907 100644
--- a/src/at/bitfire/davdroid/Constants.java
+++ b/src/at/bitfire/davdroid/Constants.java
@@ -11,7 +11,7 @@ public class Constants {
 	public static final String
 		APP_VERSION = "0.6.8",
 		ACCOUNT_TYPE = "bitfire.at.davdroid",
-		WEB_URL_HELP = "http://davdroid.bitfire.at/configuration?pk_campaign=davdroid-app",
+		WEB_URL_HELP = "https://davdroid.bitfire.at/configuration?pk_campaign=davdroid-app",
 		
 		SETTING_DISABLE_COMPRESSION = "disable_compression",
 		SETTING_NETWORK_LOGGING = "network_logging";