diff --git a/agent/http_test.go b/agent/http_test.go
index c4c0f70413..b5edf33667 100644
--- a/agent/http_test.go
+++ b/agent/http_test.go
@@ -684,8 +684,7 @@ func requireHasHeadersSet(t *testing.T, a *TestAgent, method, path string, body
 	hdrs := resp.Header()
 	reqHdrs := req.Header
 
-	fmt.Println("Request Headers:", reqHdrs.Get("Content-Type"))
-	fmt.Println("Response Headers:", hdrs.Get("Content-Type"))
+	fmt.Println("Body: ", resp.Body.String())
 
 	require.Equal(t, "*", hdrs.Get("Access-Control-Allow-Origin"),
 		"Access-Control-Allow-Origin header value incorrect")
@@ -720,7 +719,7 @@ func TestUIResponseHeaders(t *testing.T) {
 	defer a.Shutdown()
 
 	//response header for the UI appears to be being handled by the UI itself.
-	requireHasHeadersSet(t, a, http.MethodGet, "/ui", nil, api.JSONContentType)
+	requireHasHeadersSet(t, a, http.MethodGet, "/ui", nil, api.PlainContentType)
 }
 
 func TestErrorContentTypeHeaderSet(t *testing.T) {
@@ -1911,6 +1910,3 @@ func TestWithRemoteAddrHandler_InvalidAddr(t *testing.T) {
 
 	assert.True(t, nextHandlerCalled, "expected next handler to be called")
 }
-
-func TestValidateContentTypeHeader(t *testing.T) {
-}
diff --git a/api/content_type.go b/api/content_type.go
index ce1d1d3f17..6bdb5c1a57 100644
--- a/api/content_type.go
+++ b/api/content_type.go
@@ -15,42 +15,47 @@ const (
 )
 
 // ContentTypeRule defines a rule for content type determination
-type ContentTypeRule struct {
-	Path        string
-	Method      string
-	ContentType string
+type contentTypeRule struct {
+	path        string
+	method      string
+	contentType string
 }
 
-var contentTypeRules = []ContentTypeRule{
+var contentTypeRules = []contentTypeRule{
 	{
-		Path:        "/v1/snapshot",
-		Method:      http.MethodGet,
-		ContentType: "application/x-gzip",
+		path:        "/v1/snapshot",
+		method:      http.MethodGet,
+		contentType: "application/x-gzip",
 	},
 	{
-		Path:        "/v1/snapshot",
-		Method:      http.MethodPut,
-		ContentType: "application/octet-stream",
+		path:        "/v1/snapshot",
+		method:      http.MethodPut,
+		contentType: "application/octet-stream",
 	},
 	{
-		Path:        "/v1/kv",
-		Method:      http.MethodPut,
-		ContentType: "application/octet-stream",
+		path:        "/v1/kv",
+		method:      http.MethodPut,
+		contentType: "application/octet-stream",
 	},
 	{
-		Path:        "/v1/kv",
-		Method:      http.MethodDelete,
-		ContentType: "",
+		path:        "/v1/kv",
+		method:      http.MethodDelete,
+		contentType: "",
 	},
 	{
-		Path:        "/v1/kv",
-		Method:      http.MethodGet,
-		ContentType: "",
+		path:        "/v1/kv",
+		method:      http.MethodGet,
+		contentType: "",
 	},
 	{
-		Path:        "/v1/event/fire",
-		Method:      http.MethodPut,
-		ContentType: "application/octet-stream",
+		path:        "/v1/event/fire",
+		method:      http.MethodPut,
+		contentType: "application/octet-stream",
+	},
+	{
+		path:        "/ui",
+		method:      http.MethodGet,
+		contentType: PlainContentType,
 	},
 }
 
@@ -72,7 +77,7 @@ func DetermineContentType(req *http.Request) string {
 	// Check against defined endpoint and required content type rules
 	for _, rule := range contentTypeRules {
 		if matchesRule(req, rule) {
-			return rule.ContentType
+			return rule.contentType
 		}
 	}
 
@@ -81,9 +86,9 @@ func DetermineContentType(req *http.Request) string {
 }
 
 // matchesRule checks if a request matches a content type rule
-func matchesRule(req *http.Request, rule ContentTypeRule) bool {
-	return strings.HasPrefix(req.URL.Path, rule.Path) &&
-		(rule.Method == "" || req.Method == rule.Method)
+func matchesRule(req *http.Request, rule contentTypeRule) bool {
+	return strings.HasPrefix(req.URL.Path, rule.path) &&
+		(rule.method == "" || req.Method == rule.method)
 }
 
 // isIndexPage checks if the request is for the index page