diff --git a/openflexure_microscope/microscoperc.default.yaml b/openflexure_microscope/microscoperc.default.yaml
index 44fd3a59..3c7425b6 100644
--- a/openflexure_microscope/microscoperc.default.yaml
+++ b/openflexure_microscope/microscoperc.default.yaml
@@ -14,4 +14,4 @@ picamera_settings: ~/.openflexure/picamera_settings.yaml
 
 # Default plugins
 plugins:
-  - openflexure_microscope.plugins.default.autofocus:Plugin
\ No newline at end of file
+  - openflexure_microscope.plugins.default.autofocus:AutofocusPlugin
\ No newline at end of file