diff --git a/cmd/picoclaw/internal/auth/helpers.go b/cmd/picoclaw/internal/auth/helpers.go
index 271859128..fb141119e 100644
--- a/cmd/picoclaw/internal/auth/helpers.go
+++ b/cmd/picoclaw/internal/auth/helpers.go
@@ -21,7 +21,6 @@ const (
 	defaultAnthropicModel = "claude-sonnet-4.6"
 )
 
-
 func authLoginCmd(provider string, useDeviceCode bool, useOauth bool) error {
 	switch provider {
 	case "openai":
diff --git a/pkg/providers/anthropic/provider_test.go b/pkg/providers/anthropic/provider_test.go
index 3542447dd..b1aed17b5 100644
--- a/pkg/providers/anthropic/provider_test.go
+++ b/pkg/providers/anthropic/provider_test.go
@@ -271,8 +271,8 @@ func TestProvider_ChatStreamingRoundTrip(t *testing.T) {
 		if got := r.Header.Get("Authorization"); got != "Bearer refreshed-token" {
 			t.Errorf("Authorization = %q, want %q", got, "Bearer refreshed-token")
 		}
-		if got := r.Header.Get("anthropic-beta"); got != anthropicBetaHeader {
-			t.Errorf("anthropic-beta = %q, want %q", got, anthropicBetaHeader)
+		if got := r.Header.Get("Anthropic-Beta"); got != anthropicBetaHeader {
+			t.Errorf("Anthropic-Beta = %q, want %q", got, anthropicBetaHeader)
 		}
 
 		w.Header().Set("Content-Type", "text/event-stream")