diff --git a/packaging/linux/AppRun.in b/packaging/linux/AppRun.in
index 86014587a1..298f2d6122 100755
--- a/packaging/linux/AppRun.in
+++ b/packaging/linux/AppRun.in
@@ -37,7 +37,7 @@ if prompt_apt_install_mono_complete; then
 fi
 
 if mono_missing_or_old; then
-  ERROR_MESSAGE="{MODNAME} requires Mono ${MINIMUM_MONO_VERSION} or greater.\nPlease install Mono using your system package manager."
+  ERROR_MESSAGE="{MODNAME} requires Mono ${MINIMUM_MONO_VERSION} or greater.\nPlease install Mono using your system package manager.\n\nSee http://wiki.openra.net/AppImages for more information."
   if command -v zenity > /dev/null; then
     zenity --no-wrap --error --title "{MODNAME}" --text "${ERROR_MESSAGE}" 2> /dev/null
   elif command -v kdialog > /dev/null; then