diff --git a/spec/datadog/opentelemetry_spec.rb b/spec/datadog/opentelemetry_spec.rb
index 462bf51298e..c3671ea9138 100644
--- a/spec/datadog/opentelemetry_spec.rb
+++ b/spec/datadog/opentelemetry_spec.rb
@@ -14,6 +14,7 @@
       Datadog.configure do |c|
         c.tracing.writer = writer_
         c.tracing.partial_flush.min_spans_threshold = 1 # Ensure tests flush spans quickly
+        c.tracing.distributed_tracing.propagation_style = ['Datadog'] # Ensure test has consistent propagation configuration
       end
 
       ::OpenTelemetry::SDK.configure do |c|