diff --git a/src/trap/laser.rs b/src/trap/laser.rs
index c769345..4753a76 100644
--- a/src/trap/laser.rs
+++ b/src/trap/laser.rs
@@ -122,6 +122,7 @@ pub struct DacConfig{
 
 #[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
 pub enum StreamSource {
+    Disabled,
     CurrentLines,
     Rectangle,
     Grid, // lines
@@ -131,12 +132,12 @@ pub enum StreamSource {
 }
 
 // usefull to create pull downs with an iterator
-pub const STREAM_SOURCES: [StreamSource; 4] = [
+pub const STREAM_SOURCES: [StreamSource; 5] = [
+    StreamSource::Disabled,
     StreamSource::CurrentLines,
     StreamSource::Rectangle,
     StreamSource::Grid,
     StreamSource::WorldGrid,
-    // StreamSource::Circle,
     // StreamSource::Spiral
     ]; 
 
@@ -302,6 +303,7 @@ impl StreamSource{
                 
                 LaserPoints { points, space: CoordinateSpace::World }
             },
+            StreamSource::Disabled => LaserPoints::default(), // empty set
             _ => LaserPoints::default(), // empty set
         }
     }