diff --git a/test/test.cpp b/test/test.cpp
index f5315b98..34bb184d 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -1,4 +1,5 @@
 #include <chrono>
+#include <mutex>
 #include <thread>
 #include "../client/Tracy.hpp"
 #include "../common/TracySystem.hpp"
@@ -38,17 +39,45 @@ void ScopeCheck()
     }
 }
 
+static std::mutex mutex;
+
+void Lock1()
+{
+    for(;;)
+    {
+        std::this_thread::sleep_for( std::chrono::milliseconds( 4 ) );
+        std::lock_guard<std::mutex> lock( mutex );
+        ZoneScoped;
+        std::this_thread::sleep_for( std::chrono::milliseconds( 4 ) );
+    }
+}
+
+void Lock2()
+{
+    for(;;)
+    {
+        std::this_thread::sleep_for( std::chrono::milliseconds( 3 ) );
+        std::unique_lock<std::mutex> lock( mutex );
+        ZoneScoped;
+        std::this_thread::sleep_for( std::chrono::milliseconds( 5 ) );
+    }
+}
+
 int main()
 {
     auto t1 = std::thread( TestFunction );
     auto t2 = std::thread( TestFunction );
     auto t3 = std::thread( ResolutionCheck );
     auto t4 = std::thread( ScopeCheck );
+    auto t5 = std::thread( Lock1 );
+    auto t6 = std::thread( Lock2 );
 
     tracy::SetThreadName( t1, "First thread" );
     tracy::SetThreadName( t2, "Second thread" );
     tracy::SetThreadName( t3, "Resolution check" );
     tracy::SetThreadName( t4, "Scope check" );
+    tracy::SetThreadName( t5, "Lock 1" );
+    tracy::SetThreadName( t6, "Lock 2" );
 
     for(;;)
     {