diff --git a/pkg/agent/loop_test.go b/pkg/agent/loop_test.go
index cfa5cf0f2..5dfc1cd96 100644
--- a/pkg/agent/loop_test.go
+++ b/pkg/agent/loop_test.go
@@ -418,7 +418,7 @@ func TestProcessMessage_AssistantSavedOnDelivered(t *testing.T) {
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				Workspace:         tmpDir,
-				Model:             "test-model",
+				ModelName:         "test-model",
 				MaxTokens:         4096,
 				MaxToolIterations: 10,
 			},
@@ -480,7 +480,7 @@ func TestProcessMessage_SavesReplyToMessageIDFromInboundField(t *testing.T) {
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				Workspace:         tmpDir,
-				Model:             "test-model",
+				ModelName:         "test-model",
 				MaxTokens:         4096,
 				MaxToolIterations: 10,
 			},
diff --git a/pkg/agent/steering_test.go b/pkg/agent/steering_test.go
index 71fe51dd6..1cca44ca7 100644
--- a/pkg/agent/steering_test.go
+++ b/pkg/agent/steering_test.go
@@ -442,7 +442,7 @@ func TestDrainBusToSteering_PreservesSenderAndThreadingMetadata(t *testing.T) {
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				Workspace:         tmpDir,
-				Model:             "test-model",
+				ModelName:         "test-model",
 				MaxTokens:         4096,
 				MaxToolIterations: 10,
 			},
@@ -507,7 +507,7 @@ func TestContinueWithSteeringMessages_ReturnsTrackedAssistantDelivery(t *testing
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				Workspace:         tmpDir,
-				Model:             "test-model",
+				ModelName:         "test-model",
 				MaxTokens:         4096,
 				MaxToolIterations: 10,
 			},