diff --git a/src/Apps/Tools/HDRTest.cpp b/src/Apps/Tools/HDRTest.cpp
index d556959..de99e7f 100644
--- a/src/Apps/Tools/HDRTest.cpp
+++ b/src/Apps/Tools/HDRTest.cpp
@@ -275,10 +275,10 @@ int main(int argc, char** argv)
 
     r_window->EnableRelativeMouse(false);
 
-    uint32_t currentTest = 0;
+    int32_t currentTest = 0;
     auto t1 = Time::now();
     auto startTime = Time::now();
-    uint32_t stops = 0;
+    int32_t stops = 0;
     while (r_window->Update(handler))
     {
         const auto t2 = Time::now();
@@ -297,7 +297,7 @@ int main(int argc, char** argv)
         else if (handler.getFirst(Input::ButtonCodes::Key_Down))
             stops--;
 
-        stops = Clamp(stops, 0u, 5u);
+        stops = Clamp(stops, 0, 5);
 
         float targetNits = 0.0f;
         switch (stops)