diff --git a/src/UI/AITOOL.cs b/src/UI/AITOOL.cs
index c07291b2..7758c81d 100644
--- a/src/UI/AITOOL.cs
+++ b/src/UI/AITOOL.cs
@@ -1166,6 +1166,12 @@ public static async Task<bool> DetectObjects(ClsImageQueueItem CurImg, ClsURLIte
 
                                             }  //end loop over current object list
 
+                                            if (cam.maskManager.masking_enabled)
+                                            {
+                                                //mark the end of AI detection for the current image
+                                                cam.maskManager.lastDetectionDate = DateTime.Now; 
+                                            }
+
                                             //if one or more objects were detected, that are 1. relevant, 2. within confidence limits and 3. outside of masked areas
                                             if (objects.Count() > 0)
                                             {
diff --git a/src/UI/MaskManager.cs b/src/UI/MaskManager.cs
index ab7825c1..9c9826f1 100644
--- a/src/UI/MaskManager.cs
+++ b/src/UI/MaskManager.cs
@@ -122,7 +122,6 @@ public void Update(Camera cam)
         public bool CreateDynamicMask(ObjectPosition currentObject)
         {
             bool maskExists = false;
-            lastDetectionDate = DateTime.Now;
 
             List<string> objects = Global.Split(this.objects, "|;,");