diff --git a/src/istio/control/http/attributes_builder_test.cc b/src/istio/control/http/attributes_builder_test.cc
index 5f04a597616..83bad095c51 100644
--- a/src/istio/control/http/attributes_builder_test.cc
+++ b/src/istio/control/http/attributes_builder_test.cc
@@ -221,19 +221,19 @@ attributes {
 attributes {
   key: "source.namespace"
   value {
-    string_value: "test_ns"
+    string_value: "ns_ns"
   }
 }
 attributes {
   key: "source.principal"
   value {
-    string_value: "sa/test_user/ns/test_ns/"
+    string_value: "sa/test_user/ns/ns_ns/"
   }
 }
 attributes {
   key: "source.user"
   value {
-    string_value: "sa/test_user/ns/test_ns/"
+    string_value: "sa/test_user/ns/ns_ns/"
   }
 }
 attributes {
@@ -492,19 +492,19 @@ fields {
 fields {
   key: "source.namespace"
   value {
-    string_value: "test_ns"
+    string_value: "ns_ns"
   }
 }
 fields {
   key: "source.principal"
   value {
-    string_value: "sa/test_user/ns/test_ns/"
+    string_value: "sa/test_user/ns/ns_ns/"
   }
 }
 fields {
   key: "source.user"
   value {
-    string_value: "sa/test_user/ns/test_ns/"
+    string_value: "sa/test_user/ns/ns_ns/"
   }
 }
 )";
@@ -562,7 +562,7 @@ TEST(AttributesBuilderTest, TestCheckAttributesWithoutAuthnFilter) {
   EXPECT_CALL(mock_data, GetPrincipal(_, _))
       .WillRepeatedly(Invoke([](bool peer, std::string *user) -> bool {
         if (peer) {
-          *user = "sa/test_user/ns/test_ns/";
+          *user = "sa/test_user/ns/ns_ns/";
         } else {
           *user = "destination_user";
         }
@@ -636,7 +636,7 @@ TEST(AttributesBuilderTest, TestCheckAttributes) {
   EXPECT_CALL(mock_data, GetPrincipal(_, _))
       .WillRepeatedly(Invoke([](bool peer, std::string *user) -> bool {
         if (peer) {
-          *user = "sa/test_user/ns/test_ns/";
+          *user = "sa/test_user/ns/ns_ns/";
         } else {
           *user = "destination_user";
         }
diff --git a/src/istio/control/tcp/attributes_builder_test.cc b/src/istio/control/tcp/attributes_builder_test.cc
index 6de42b7cf95..faa78ccc06e 100644
--- a/src/istio/control/tcp/attributes_builder_test.cc
+++ b/src/istio/control/tcp/attributes_builder_test.cc
@@ -77,19 +77,19 @@ attributes {
 attributes {
   key: "source.namespace"
   value {
-    string_value: "test_ns"
+    string_value: "ns_ns"
   }
 }
 attributes {
   key: "source.principal"
   value {
-    string_value: "cluster.local/sa/test_user/ns/test_ns/"
+    string_value: "cluster.local/sa/test_user/ns/ns_ns/"
   }
 }
 attributes {
   key: "source.user"
   value {
-    string_value: "cluster.local/sa/test_user/ns/test_ns/"
+    string_value: "cluster.local/sa/test_user/ns/ns_ns/"
   }
 }
 attributes {
@@ -379,7 +379,7 @@ TEST(AttributesBuilderTest, TestCheckAttributes) {
   EXPECT_CALL(mock_data, GetPrincipal(_, _))
       .WillRepeatedly(Invoke([](bool peer, std::string* user) -> bool {
         if (peer) {
-          *user = "cluster.local/sa/test_user/ns/test_ns/";
+          *user = "cluster.local/sa/test_user/ns/ns_ns/";
         } else {
           *user = "destination_user";
         }
diff --git a/src/istio/utils/utils_test.cc b/src/istio/utils/utils_test.cc
index dd3c34feff4..4282e4edccd 100644
--- a/src/istio/utils/utils_test.cc
+++ b/src/istio/utils/utils_test.cc
@@ -50,7 +50,9 @@ TEST_F(UtilsTest, GetSourceNamespace) {
   checkTrue("cluster.local/ns//", "");
   checkTrue("cluster.local/sa/user/ns/", "");
   checkTrue("cluster.local/ns//sa/user", "");
+  checkTrue("cluster.local/ns//ns/ns", "");
 
+  checkTrue("cluster.local/ns/ns/ns/ns", "ns");
   checkTrue("cluster.local/ns/abc_ns", "abc_ns");
   checkTrue("cluster.local/ns/abc_ns/", "abc_ns");
   checkTrue("cluster.local/ns/abc_ns/sa/user_ns", "abc_ns");