diff --git a/test/cpp/interop/http2_client.cc b/test/cpp/interop/http2_client.cc
index 01c07823cfe9664711fdfbcd3382e3d262d4bbe2..38a437f39f8a166ed95c3540f356385d43dbae6e 100644
--- a/test/cpp/interop/http2_client.cc
+++ b/test/cpp/interop/http2_client.cc
@@ -41,7 +41,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/transport/byte_stream.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/interop/http2_client.h"
 
diff --git a/test/cpp/interop/http2_client.h b/test/cpp/interop/http2_client.h
index 12df5d26bc27a67a42dde78b0ff22bd4960e6a49..e57d695205bf919c9b887b7c04fab0121fd03218 100644
--- a/test/cpp/interop/http2_client.h
+++ b/test/cpp/interop/http2_client.h
@@ -38,7 +38,7 @@
 
 #include <grpc++/channel.h>
 #include <grpc/grpc.h>
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 
 namespace grpc {
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index b7f2723c39bd302862d5e746eda95985434c839f..55ba324cc7d34296415d8a1a93e1c6d170c9e62b 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -46,8 +46,8 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/transport/byte_stream.h"
-#include "src/proto/grpc/testing/empty.grpc.pb.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/empty.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/interop/client_helper.h"
 #include "test/cpp/interop/interop_client.h"
diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index 74f4db6b78903f37c80e679b1667bcba0490e8ae..efcb7d286085b0e22273c55c9def3b558a5aee40 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -38,7 +38,7 @@
 
 #include <grpc++/channel.h>
 #include <grpc/grpc.h>
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 
 namespace grpc {
diff --git a/test/cpp/interop/interop_server.cc b/test/cpp/interop/interop_server.cc
index 5a810b45ef4f132c3694c0a53c68ddfec669ed27..1cbca179287aa20b1a4730eaaac4d33e74812952 100644
--- a/test/cpp/interop/interop_server.cc
+++ b/test/cpp/interop/interop_server.cc
@@ -48,8 +48,8 @@
 
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/byte_stream.h"
-#include "src/proto/grpc/testing/empty.grpc.pb.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/empty.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/interop/server_helper.h"
 #include "test/cpp/util/test_config.h"
diff --git a/test/cpp/interop/reconnect_interop_client.cc b/test/cpp/interop/reconnect_interop_client.cc
index 1c2f6066377b1c652fe0e7be41722d3801b29c5f..01d985068dcb05662cf1f0d251bd8ffcbfd2246d 100644
--- a/test/cpp/interop/reconnect_interop_client.cc
+++ b/test/cpp/interop/reconnect_interop_client.cc
@@ -40,8 +40,8 @@
 #include <grpc++/support/channel_arguments.h>
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
-#include "src/proto/grpc/testing/empty.grpc.pb.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/empty.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/util/create_test_channel.h"
 #include "test/cpp/util/test_config.h"
diff --git a/test/cpp/interop/reconnect_interop_server.cc b/test/cpp/interop/reconnect_interop_server.cc
index 634d0a90fceb85e5834f85968254652522ef2b53..8d1b884af91d6976a7d783146ad62b6cc7781e72 100644
--- a/test/cpp/interop/reconnect_interop_server.cc
+++ b/test/cpp/interop/reconnect_interop_server.cc
@@ -47,8 +47,8 @@
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
 
-#include "src/proto/grpc/testing/empty.grpc.pb.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/empty.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/core/util/reconnect_server.h"
 #include "test/cpp/util/test_config.h"
diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index baa9304cc2d47e5df91f2fcef62a90c3622279d7..25a19a5a740ddef9dbe0717a428918bb10589b20 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -46,7 +46,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 
-#include "src/proto/grpc/testing/payloads.grpc.pb.h"
+#include "src/proto/grpc/testing/payloads.pb.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 
 #include "test/cpp/qps/histogram.h"
diff --git a/test/cpp/qps/driver.h b/test/cpp/qps/driver.h
index e72d30a4effbc03cc3e67835eee4722fcc43b13e..dd32a16c879abbacffd115721b8da4c3ae303af0 100644
--- a/test/cpp/qps/driver.h
+++ b/test/cpp/qps/driver.h
@@ -36,7 +36,7 @@
 
 #include <memory>
 
-#include "src/proto/grpc/testing/control.grpc.pb.h"
+#include "src/proto/grpc/testing/control.pb.h"
 #include "test/cpp/qps/histogram.h"
 
 namespace grpc {
diff --git a/test/cpp/qps/histogram.h b/test/cpp/qps/histogram.h
index acb415f0a1085ed22edf0b83e2d1d90ed57f32e7..470a394301345cfe6145520ede70cd10c8e16114 100644
--- a/test/cpp/qps/histogram.h
+++ b/test/cpp/qps/histogram.h
@@ -35,7 +35,7 @@
 #define TEST_QPS_HISTOGRAM_H
 
 #include <grpc/support/histogram.h>
-#include "src/proto/grpc/testing/stats.grpc.pb.h"
+#include "src/proto/grpc/testing/stats.pb.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/qps/server.h b/test/cpp/qps/server.h
index 821d5935beb96d971ad2539587492f9a183f50b5..8fbf37a0957869868fec4b68c75c0823f21e1b39 100644
--- a/test/cpp/qps/server.h
+++ b/test/cpp/qps/server.h
@@ -38,8 +38,8 @@
 #include <grpc/support/cpu.h>
 #include <vector>
 
-#include "src/proto/grpc/testing/control.grpc.pb.h"
-#include "src/proto/grpc/testing/messages.grpc.pb.h"
+#include "src/proto/grpc/testing/control.pb.h"
+#include "src/proto/grpc/testing/messages.pb.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/cpp/qps/usage_timer.h"