diff --git a/doc/uml/wepClass.uml b/doc/uml/wepClass.uml
index 1a16bba9..c2dfcced 100644
--- a/doc/uml/wepClass.uml
+++ b/doc/uml/wepClass.uml
@@ -5,5 +5,5 @@ class ParamReader
 class WfEstimator
 class Image
 class Instrument
-ParamReader <|-- Instrument
+ParamReader *-- Instrument
 @enduml