diff --git a/lavague-sdk/lavague/sdk/trajectory/model.py b/lavague-sdk/lavague/sdk/trajectory/model.py
index d8157ff6..9e955fcd 100644
--- a/lavague-sdk/lavague/sdk/trajectory/model.py
+++ b/lavague-sdk/lavague/sdk/trajectory/model.py
@@ -101,10 +101,13 @@ def deserialize_action(cls, values: Dict[str, Any]) -> Dict[str, Any]:
         return values
 
 
+class StepKnowledge(ActionWrapper):
+    instruction: Instruction
+
+
 class StepCompletion(ActionWrapper):
     run_status: RunStatus
     run_mode: RunMode
 
-
-class StepKnowledge(ActionWrapper):
-    instruction: Instruction
+    def to_knowledge(self, instruction: Instruction) -> StepKnowledge:
+        return StepKnowledge(instruction=instruction, action=self.action)
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