diff --git a/adapters/sinatra/lib/opentelemetry/adapters/sinatra/middlewares/tracer_middleware.rb b/adapters/sinatra/lib/opentelemetry/adapters/sinatra/middlewares/tracer_middleware.rb
index ae47fbe06..d66c0b759 100644
--- a/adapters/sinatra/lib/opentelemetry/adapters/sinatra/middlewares/tracer_middleware.rb
+++ b/adapters/sinatra/lib/opentelemetry/adapters/sinatra/middlewares/tracer_middleware.rb
@@ -43,7 +43,7 @@ def trace_response(span, env, resp)
             status, _headers, _response_body = resp
 
             span.set_attribute('http.status_code', status)
-            span.set_attribute('http.status_text', Rack::Utils::HTTP_STATUS_CODES[status])
+            span.set_attribute('http.status_text', ::Rack::Utils::HTTP_STATUS_CODES[status])
             span.set_attribute('http.route', env['sinatra.route'].split.last)
             span.status = OpenTelemetry::Trace::Status.http_to_status(status)
           end