diff --git a/lib/trailblazer/workflow/collaboration.rb b/lib/trailblazer/workflow/collaboration.rb
index f351acd..7f49c12 100644
--- a/lib/trailblazer/workflow/collaboration.rb
+++ b/lib/trailblazer/workflow/collaboration.rb
@@ -127,7 +127,7 @@ def initial_lane_positions(lanes)
         # Triggers the {start_task} event and runs the entire collaboration until message is sent and
         # the throwing activity stops in a suspend or End terminus.
         # @private
-        def advance(collaboration, (ctx, flow), circuit_options, lane_positions:, start_task_position:, message_flow:)
+        def advance((ctx, flow), circuit_options, lane_positions:, start_task_position:, message_flow:)
           signal = nil
 
           # start_task, activity,
diff --git a/lib/trailblazer/workflow/discovery.rb b/lib/trailblazer/workflow/discovery.rb
index 8331a5b..a8623af 100644
--- a/lib/trailblazer/workflow/discovery.rb
+++ b/lib/trailblazer/workflow/discovery.rb
@@ -73,7 +73,6 @@ def call(collaboration, start_task_position:, run_multiple_times: {}, initial_la
           discovered_state = discovered_state.merge(ctx_before: [ctx.inspect])
 
           configuration, (ctx, flow) = Trailblazer::Workflow::Collaboration::Synchronous.advance(
-            collaboration,
             [ctx, {throw: []}],
             {}, # circuit_options
 
diff --git a/lib/trailblazer/workflow/test/assertions.rb b/lib/trailblazer/workflow/test/assertions.rb
index 4a1ca32..4c586fa 100644
--- a/lib/trailblazer/workflow/test/assertions.rb
+++ b/lib/trailblazer/workflow/test/assertions.rb
@@ -38,7 +38,7 @@ def assert_advance(event_label, test_plan:, lanes_cfg:, schema:, message_flow:,
           ctx_for_advance = ctx
 
           configuration, (ctx, flow) = Trailblazer::Workflow::Collaboration::Synchronous.advance(
-            schema,
+            # schema,
             [ctx_for_advance, {throw: []}],
             {}, # circuit_options