diff --git a/tools/aconfig/src/codegen_java.rs b/tools/aconfig/src/codegen_java.rs
index d0f62a3..23e2cd8 100644
--- a/tools/aconfig/src/codegen_java.rs
+++ b/tools/aconfig/src/codegen_java.rs
@@ -135,10 +135,15 @@
     package com.android.aconfig.test;
     /** @hide */
     public final class Flags {
+        /** @hide */
         public static final String FLAG_DISABLED_RO = "com.android.aconfig.test.disabled_ro";
+        /** @hide */
         public static final String FLAG_DISABLED_RW = "com.android.aconfig.test.disabled_rw";
+        /** @hide */
         public static final String FLAG_ENABLED_FIXED_RO = "com.android.aconfig.test.enabled_fixed_ro";
+        /** @hide */
         public static final String FLAG_ENABLED_RO = "com.android.aconfig.test.enabled_ro";
+        /** @hide */
         public static final String FLAG_ENABLED_RW = "com.android.aconfig.test.enabled_rw";
 
         @com.android.aconfig.annotations.AssumeFalseForR8
diff --git a/tools/aconfig/templates/Flags.java.template b/tools/aconfig/templates/Flags.java.template
index 95a7f3b..39024a8 100644
--- a/tools/aconfig/templates/Flags.java.template
+++ b/tools/aconfig/templates/Flags.java.template
@@ -3,6 +3,7 @@
 /** @hide */
 public final class Flags \{
 {{- for item in class_elements}}
+    /** @hide */
     public static final String FLAG_{item.flag_name_constant_suffix} = "{item.device_config_flag}";
 {{- endfor }}
 {{ for item in class_elements}}