diff --git a/timer.cpp b/timer.cpp
index 0aaf7d8..afd4b8d 100644
--- a/timer.cpp
+++ b/timer.cpp
@@ -73,6 +73,7 @@
     }
 
     log<level::INFO>("Timer expired");
+    sd_event_source_set_enabled(eventSource, SD_EVENT_OFF);
     return 0;
 }