diff --git a/aidl/android/media/InterpolatorConfig.aidl b/aidl/android/media/InterpolatorConfig.aidl
index ef7486e..49f90e8 100644
--- a/aidl/android/media/InterpolatorConfig.aidl
+++ b/aidl/android/media/InterpolatorConfig.aidl
@@ -22,7 +22,7 @@
  * {@hide}
  */
 parcelable InterpolatorConfig {
-    InterpolatorType type;
+    InterpolatorType type = InterpolatorType.CUBIC;
     /** For cubic interpolation, the boundary conditions in slope. */
     float firstSlope;
     float lastSlope;
diff --git a/aidl/android/media/VolumeShaperConfiguration.aidl b/aidl/android/media/VolumeShaperConfiguration.aidl
index 824c169..d6e6505 100644
--- a/aidl/android/media/VolumeShaperConfiguration.aidl
+++ b/aidl/android/media/VolumeShaperConfiguration.aidl
@@ -24,7 +24,7 @@
  * {@hide}
  */
 parcelable VolumeShaperConfiguration {
-    VolumeShaperConfigurationType type;
+    VolumeShaperConfigurationType type = VolumeShaperConfigurationType.ID;
     int id;
     /** Bitmask, indexed by VolumeShaperConfigurationOptionFlag. */
     int optionFlags;