diff --git a/src/service.py b/src/service.py
index 818eb8a31e8a86b72f332963abccb02330483a0c..a3152bdeabb6d1ac3034c4fc7b727ec999e5a329 100644
--- a/src/service.py
+++ b/src/service.py
@@ -191,9 +191,10 @@ class ApiService():
             source_number (Integer): Number of the engine
         """
         if self.active_source > 0:
-            self.active_source = source_number
-            activity_log = ActivityLog(active_source)
-            activity_log.save()
+            if self.active_source != source_number:
+                self.active_source = source_number
+                activity_log = ActivityLog(active_source)
+                activity_log.save()
 
 
     def get_active_source(self):