diff --git a/examples/eln_data.yaml b/examples/eln_data.yaml
index 09a2f89..8800ed0 100644
--- a/examples/eln_data.yaml
+++ b/examples/eln_data.yaml
@@ -28,7 +28,7 @@ instrument:
     data_correction: false
     type: objective
   light_source:
-    type: arc lamp
+    type: Xenon Lamp
   rotating_element:
     revolutions:
       value: 50.0
diff --git a/tests/data/eln_data.yaml b/tests/data/eln_data.yaml
index 09a2f89..8800ed0 100644
--- a/tests/data/eln_data.yaml
+++ b/tests/data/eln_data.yaml
@@ -28,7 +28,7 @@ instrument:
     data_correction: false
     type: objective
   light_source:
-    type: arc lamp
+    type: Xenon Lamp
   rotating_element:
     revolutions:
       value: 50.0