diff --git a/invokeai/app/invocations/params.py b/invokeai/app/invocations/params.py
index f7479cdc71..0f01d65948 100644
--- a/invokeai/app/invocations/params.py
+++ b/invokeai/app/invocations/params.py
@@ -65,6 +65,6 @@ class ParamStringInvocation(BaseInvocation):
           },
       }
 
-    def invoke(self) -> StringOutput:
+    def invoke(self, context: InvocationContext) -> StringOutput:
         return StringOutput(text=self.text)
     
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