diff --git a/rtc_base/experiments/field_trial_parser.h b/rtc_base/experiments/field_trial_parser.h
index f723b3b49b..e6ae4c52a6 100644
--- a/rtc_base/experiments/field_trial_parser.h
+++ b/rtc_base/experiments/field_trial_parser.h
@@ -76,6 +76,8 @@ class FieldTrialParameter : public FieldTrialParameterInterface {
   operator T() const { return Get(); }
   const T* operator->() const { return &value_; }
 
+  void SetForTest(T value) { value_ = value; }
+
  protected:
   bool Parse(absl::optional<std::string> str_value) override {
     if (str_value) {