diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index dd4d4dcd3d03f..f3867d8d7b423 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -5248,7 +5248,7 @@ package android.hardware.soundtrigger {
 
   public static final class SoundTrigger.KeyphraseRecognitionExtra implements android.os.Parcelable {
     method public int describeContents();
-    method public int getCoarseConfidenceLevel();
+    method @IntRange(from=0, to=100) public int getCoarseConfidenceLevel();
     method public int getKeyphraseId();
     method public int getRecognitionModes();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
diff --git a/core/java/android/hardware/soundtrigger/SoundTrigger.java b/core/java/android/hardware/soundtrigger/SoundTrigger.java
index c36390917cf18..a9d665c8b8a5a 100644
--- a/core/java/android/hardware/soundtrigger/SoundTrigger.java
+++ b/core/java/android/hardware/soundtrigger/SoundTrigger.java
@@ -29,6 +29,7 @@ import static android.system.OsConstants.EPIPE;
 import static java.util.Objects.requireNonNull;
 
 import android.annotation.IntDef;
+import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
@@ -1630,7 +1631,8 @@ public class SoundTrigger {
          * @hide
          */
         @UnsupportedAppUsage
-        public KeyphraseRecognitionExtra(int id, int recognitionModes, int coarseConfidenceLevel,
+        public KeyphraseRecognitionExtra(int id, int recognitionModes,
+                @IntRange(from = 0, to = 100) int coarseConfidenceLevel,
                 @Nullable ConfidenceLevel[] confidenceLevels) {
             this.id = id;
             this.recognitionModes = recognitionModes;
@@ -1660,6 +1662,7 @@ public class SoundTrigger {
          *
          * <p>The confidence level is expressed in percent (0% -100%).
          */
+        @IntRange(from = 0, to = 100)
         public int getCoarseConfidenceLevel() {
             return coarseConfidenceLevel;
         }