diff --git a/CMakeLists.txt b/CMakeLists.txt
index b6df272..7ae1216 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,10 @@ set(LIBRARY_OUTPUT_PATH    ${CMAKE_BINARY_DIR}/bin)
 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
 
 add_subdirectory(src)
+
+set(GOOGLETEST_VERSION 1.10.0)
 add_subdirectory(3rdparty/gtest)
 add_subdirectory(test)
+
 add_subdirectory(demo/chat)
 add_subdirectory(demo/msg_que)
diff --git a/demo/msg_que/main.cpp b/demo/msg_que/main.cpp
index 95d94aa..2c19e76 100644
--- a/demo/msg_que/main.cpp
+++ b/demo/msg_que/main.cpp
@@ -27,7 +27,10 @@ using msg_que_t = ipc::chan<ipc::relat::single, ipc::relat::single, ipc::trans::
 
 msg_que_t que__{ name__ };
 ipc::byte_t buff__[max_sz];
-capo::random<> rand__{ min_sz, max_sz };
+capo::random<> rand__{ 
+    static_cast<int>(min_sz), 
+    static_cast<int>(max_sz)
+};
 
 inline std::string str_of_size(std::size_t sz) noexcept {
     if (sz > 1024 * 1024) {