diff --git a/src/struct_pb/tests/CMakeLists.txt b/src/struct_pb/tests/CMakeLists.txt
index a845733ca..8f7f1a52d 100644
--- a/src/struct_pb/tests/CMakeLists.txt
+++ b/src/struct_pb/tests/CMakeLists.txt
@@ -20,19 +20,22 @@ endif()
 set(TEST_PROTO main.cpp)
 
 if (Protobuf_FOUND)
-  add_definitions(-DSTRUCT_PB_WITH_PROTO)
-  message(STATUS "Found Protobuf: ${Protobuf_VERSION}")
-  include_directories(${Protobuf_INCLUDE_DIRS})
-  include_directories(${CMAKE_CURRENT_BINARY_DIR})
-  set(PROTO_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/)
-  file(GLOB PROTO_FILES ${PROTO_SRC_DIR}/*.proto)
+  if(${Protobuf_VERSION} GREATER_EQUAL 3.21)
+    message(STATUS "Gen proto files")
+    add_definitions(-DSTRUCT_PB_WITH_PROTO)
+    message(STATUS "Found Protobuf: ${Protobuf_VERSION}")
+    include_directories(${Protobuf_INCLUDE_DIRS})
+    include_directories(${CMAKE_CURRENT_BINARY_DIR})
+    set(PROTO_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/)
+    file(GLOB PROTO_FILES ${PROTO_SRC_DIR}/*.proto)
 
-  protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROTO_FILES})
-  # message(STATUS "Proto source files: ${PROTO_SRCS}")
-  # message(STATUS "Proto header files: ${PROTO_HDRS}")
-  add_executable(struct_pb_test ${PROTO_SRCS} ${TEST_PROTO})
-  target_link_libraries(struct_pb_test PRIVATE protobuf::libprotobuf)
-  add_test(NAME struct_pb_test COMMAND struct_pb_test)
+    protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROTO_FILES})
+    # message(STATUS "Proto source files: ${PROTO_SRCS}")
+    # message(STATUS "Proto header files: ${PROTO_HDRS}")
+    add_executable(struct_pb_test ${PROTO_SRCS} ${TEST_PROTO})
+    target_link_libraries(struct_pb_test PRIVATE protobuf::libprotobuf)
+    add_test(NAME struct_pb_test COMMAND struct_pb_test)
+  endif()
 else()
   add_executable(struct_pb_test ${TEST_PROTO})
   add_test(NAME struct_pb_test COMMAND struct_pb_test)