diff --git a/internal/build/imgsrc/ensure_builder.go b/internal/build/imgsrc/ensure_builder.go
index 3f9f47b230..d993a78b39 100644
--- a/internal/build/imgsrc/ensure_builder.go
+++ b/internal/build/imgsrc/ensure_builder.go
@@ -15,8 +15,6 @@ import (
 	"github.com/superfly/flyctl/internal/flyutil"
 	"github.com/superfly/flyctl/internal/haikunator"
 	"github.com/superfly/flyctl/internal/tracing"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/trace"
 )
 
 func EnsureBuilder(ctx context.Context, org *fly.Organization, region string, recreateBuilder bool) (*fly.Machine, *fly.App, error) {
@@ -148,7 +146,7 @@ const (
 )
 
 func validateBuilder(ctx context.Context, app *fly.App) (*fly.Machine, error) {
-	ctx, span := tracing.GetTracer().Start(ctx, "validate_builder", trace.WithAttributes(attribute.String("bulder_app", app.Name)))
+	ctx, span := tracing.GetTracer().Start(ctx, "validate_builder")
 	defer span.End()
 
 	if app == nil {
diff --git a/internal/build/imgsrc/ensure_builder_test.go b/internal/build/imgsrc/ensure_builder_test.go
index de658952ce..c07e96d943 100644
--- a/internal/build/imgsrc/ensure_builder_test.go
+++ b/internal/build/imgsrc/ensure_builder_test.go
@@ -265,34 +265,23 @@ func TestRestartBuilderMachine(t *testing.T) {
 	ctx := context.Background()
 
 	couldNotReserveResources := false
-	waitedForStartOrStop := false
 	flapsClient := mock.FlapsClient{
-		RestartFunc: func(ctx context.Context, input fly.RestartMachineInput, nonce string) error {
+		StartFunc: func(ctx context.Context, machineID string, nonce string) (*fly.MachineStartResponse, error) {
 			if couldNotReserveResources {
-				return &flaps.FlapsError{
+				return nil, &flaps.FlapsError{
 					OriginalError: fmt.Errorf("failed to restart VM xyzabc: unknown: could not reserve resource for machine: insufficient memory available to fulfill request"),
 				}
 			}
-			return nil
-		},
-		WaitFunc: func(ctx context.Context, machine *fly.Machine, state string, timeout time.Duration) (err error) {
-			if state == "started" || state == "stopped" {
-				waitedForStartOrStop = true
-			}
-
-			return nil
+			return nil, nil
 		},
 	}
 
 	ctx = flapsutil.NewContextWithClient(ctx, &flapsClient)
 	err := startBuilder(ctx, &fly.Machine{ID: "bigmachine"})
 	assert.NoError(t, err)
-	assert.True(t, waitedForStartOrStop)
 
-	waitedForStartOrStop = false
 	couldNotReserveResources = true
 	err = startBuilder(ctx, &fly.Machine{ID: "bigmachine"})
-	assert.True(t, waitedForStartOrStop)
 	assert.Error(t, err)
 	assert.ErrorIs(t, err, ShouldReplaceBuilderMachine)