diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index f48b8edf64f8b..ef2e54a925d8e 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -110,6 +110,7 @@ public class ActivityManager {
         }
     }
 
+    /** @hide */
     public void setFrontActivityScreenCompatMode(int mode) {
         try {
             ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode);
@@ -118,6 +119,7 @@ public class ActivityManager {
         }
     }
 
+    /** @hide */
     public int getPackageScreenCompatMode(String packageName) {
         try {
             return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName);
@@ -127,6 +129,7 @@ public class ActivityManager {
         }
     }
 
+    /** @hide */
     public void setPackageScreenCompatMode(String packageName, int mode) {
         try {
             ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode);