diff --git a/metadata/com.willianveiga.countdowntimer.txt b/metadata/com.willianveiga.countdowntimer.txt
index 4cbd5f0747..92aedd4839 100644
--- a/metadata/com.willianveiga.countdowntimer.txt
+++ b/metadata/com.willianveiga.countdowntimer.txt
@@ -3,6 +3,7 @@ License:GPLv3+
 Web Site:
 Source Code:https://github.com/willianveiga/CountdownTimer
 Issue Tracker:https://github.com/willianveiga/CountdownTimer/issues
+FlattrID:4151034
 
 Auto Name:Countdown Timer
 Summary:Set up a countdown timer