diff --git a/libcutils/include/cutils/multiuser.h b/libcutils/include/cutils/multiuser.h
index 4911c488f..229ee3a9a 100644
--- a/libcutils/include/cutils/multiuser.h
+++ b/libcutils/include/cutils/multiuser.h
@@ -30,7 +30,7 @@ extern userid_t multiuser_get_user_id(uid_t uid);
 extern appid_t multiuser_get_app_id(uid_t uid);
 
 extern uid_t multiuser_get_uid(userid_t user_id, appid_t app_id);
-extern uid_t multiuser_get_supplemental_uid(userid_t user_id, appid_t app_id);
+extern uid_t multiuser_get_sdk_sandbox_uid(userid_t user_id, appid_t app_id);
 
 extern gid_t multiuser_get_cache_gid(userid_t user_id, appid_t app_id);
 extern gid_t multiuser_get_ext_gid(userid_t user_id, appid_t app_id);
diff --git a/libcutils/include/private/android_filesystem_config.h b/libcutils/include/private/android_filesystem_config.h
index 155d3f581..ec3f1c756 100644
--- a/libcutils/include/private/android_filesystem_config.h
+++ b/libcutils/include/private/android_filesystem_config.h
@@ -210,9 +210,9 @@
  */
 #define AID_OVERFLOWUID 65534 /* unmapped user in the user namespace */
 
-/* use the ranges below to determine whether a process is supplemental */
-#define AID_SUPPLEMENTAL_PROCESS_START 20000 /* start of uids allocated to supplemental process */
-#define AID_SUPPLEMENTAL_PROCESS_END 29999   /* end of uids allocated to supplemental process */
+/* use the ranges below to determine whether a process is sdk sandbox */
+#define AID_SDK_SANDBOX_PROCESS_START 20000 /* start of uids allocated to sdk sandbox processes */
+#define AID_SDK_SANDBOX_PROCESS_END 29999   /* end of uids allocated to sdk sandbox processes */
 
 /* use the ranges below to determine whether a process is isolated */
 #define AID_ISOLATED_START 90000 /* start of uids for fully isolated sandboxed processes */
diff --git a/libcutils/multiuser.cpp b/libcutils/multiuser.cpp
index 76ae4ce7e..979cbf43b 100644
--- a/libcutils/multiuser.cpp
+++ b/libcutils/multiuser.cpp
@@ -29,10 +29,10 @@ uid_t multiuser_get_uid(userid_t user_id, appid_t app_id) {
     return (user_id * AID_USER_OFFSET) + (app_id % AID_USER_OFFSET);
 }
 
-uid_t multiuser_get_supplemental_uid(userid_t user_id, appid_t app_id) {
-    int supplementalProcessOffset = AID_SUPPLEMENTAL_PROCESS_START - AID_APP_START;
+uid_t multiuser_get_sdk_sandbox_uid(userid_t user_id, appid_t app_id) {
+    int sdk_sandbox_offset = AID_SDK_SANDBOX_PROCESS_START - AID_APP_START;
     if (app_id >= AID_APP_START && app_id <= AID_APP_END) {
-        return (user_id * AID_USER_OFFSET) + (app_id % AID_USER_OFFSET) + supplementalProcessOffset;
+        return (user_id * AID_USER_OFFSET) + (app_id % AID_USER_OFFSET) + sdk_sandbox_offset;
     } else {
         return -1;
     }
diff --git a/libcutils/multiuser_test.cpp b/libcutils/multiuser_test.cpp
index 68270de1c..62dd5e02c 100644
--- a/libcutils/multiuser_test.cpp
+++ b/libcutils/multiuser_test.cpp
@@ -31,20 +31,20 @@ TEST(MultiuserTest, TestMerge) {
     EXPECT_EQ(1050000U, multiuser_get_uid(10, 50000));
 }
 
-TEST(MultiuserTest, TestSupplementalUid) {
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(0, 0));
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(0, 1000));
-    EXPECT_EQ(20000U, multiuser_get_supplemental_uid(0, 10000));
-    EXPECT_EQ(25000U, multiuser_get_supplemental_uid(0, 15000));
-    EXPECT_EQ(29999U, multiuser_get_supplemental_uid(0, 19999));
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(0, 50000));
+TEST(MultiuserTest, TestSdkSandboxUid) {
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(0, 0));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(0, 1000));
+    EXPECT_EQ(20000U, multiuser_get_sdk_sandbox_uid(0, 10000));
+    EXPECT_EQ(25000U, multiuser_get_sdk_sandbox_uid(0, 15000));
+    EXPECT_EQ(29999U, multiuser_get_sdk_sandbox_uid(0, 19999));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(0, 50000));
 
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(10, 0));
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(10, 1000));
-    EXPECT_EQ(1020000U, multiuser_get_supplemental_uid(10, 10000));
-    EXPECT_EQ(1025000U, multiuser_get_supplemental_uid(10, 15000));
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(10, 20000));
-    EXPECT_EQ(ERR_UID, multiuser_get_supplemental_uid(10, 50000));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(10, 0));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(10, 1000));
+    EXPECT_EQ(1020000U, multiuser_get_sdk_sandbox_uid(10, 10000));
+    EXPECT_EQ(1025000U, multiuser_get_sdk_sandbox_uid(10, 15000));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(10, 20000));
+    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(10, 50000));
 }
 
 TEST(MultiuserTest, TestSplitUser) {