diff --git a/tests/fixture/tmpnet/README.md b/tests/fixture/tmpnet/README.md
index 9bcc60164010..90ec7f678b2f 100644
--- a/tests/fixture/tmpnet/README.md
+++ b/tests/fixture/tmpnet/README.md
@@ -78,7 +78,7 @@ network, _ := tmpnet.StartNetwork(
     ginkgo.GinkgoWriter,                           // Writer to report progress of network start
     "",                                            // Use default root dir (~/.tmpnet)
     &tmpnet.Network{
-        DefaultRuntime: tmpnet.NodeRuntimeConfig{
+        NodeRuntimeConfig: tmpnet.NodeRuntimeConfig{
             ExecPath: "/path/to/avalanchego",      // Defining the avalanchego exec path is required
         },
     },
@@ -104,7 +104,7 @@ network, _ := tmpnet.StartNetwork(
     ginkgo.GinkgoWriter,
     "",
     &tmpnet.Network{
-        DefaultRuntime: tmpnet.NodeRuntimeConfig{
+        NodeRuntimeConfig: tmpnet.NodeRuntimeConfig{
             ExecPath: "/path/to/avalanchego",
         },
         Nodes: []*Node{
diff --git a/tests/fixture/tmpnet/node_process.go b/tests/fixture/tmpnet/node_process.go
index 98295a0b8989..bec294b20713 100644
--- a/tests/fixture/tmpnet/node_process.go
+++ b/tests/fixture/tmpnet/node_process.go
@@ -97,7 +97,7 @@ func (p *NodeProcess) Start(w io.Writer) error {
 	// Avoid attempting to start an already running node.
 	proc, err := p.getProcess()
 	if err != nil {
-		return fmt.Errorf("failed to start node process: %w", err)
+		return fmt.Errorf("failed to retrieve existing process: %w", err)
 	}
 	if proc != nil {
 		return errNodeAlreadyRunning