diff --git a/tests/gamma.c b/tests/gamma.c
index 28b6c8cd..ca6eee4b 100644
--- a/tests/gamma.c
+++ b/tests/gamma.c
@@ -75,6 +75,7 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
         }
 
         case GLFW_KEY_KP_ADD:
+        case GLFW_KEY_UP:
         case GLFW_KEY_Q:
         {
             set_gamma(window, gamma_value + STEP_SIZE);
@@ -82,6 +83,7 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
         }
 
         case GLFW_KEY_KP_SUBTRACT:
+        case GLFW_KEY_DOWN:
         case GLFW_KEY_W:
         {
             if (gamma_value - STEP_SIZE > 0.f)