diff --git a/code/espurna/system.cpp b/code/espurna/system.cpp
index 1c54ac4f..7b2347a9 100644
--- a/code/espurna/system.cpp
+++ b/code/espurna/system.cpp
@@ -399,6 +399,9 @@ void SystemTimer::callback() {
         return;
     }
 
+    if (_tick) {
+        os_timer_disarm(_armed);
+    }
     reset();
 }