diff --git a/core/embed/unix/common.c b/core/embed/unix/common.c
index 6f4c7ee358..0f2543615e 100644
--- a/core/embed/unix/common.c
+++ b/core/embed/unix/common.c
@@ -18,6 +18,7 @@
  */
 
 #include <SDL.h>
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>
@@ -31,6 +32,7 @@
 #include "memzero.h"
 
 extern void main_clean_exit();
+extern float DISPLAY_GAMMA;
 
 void __attribute__((noreturn)) __shutdown(void) {
   printf("SHUTDOWN\n");
@@ -146,6 +148,14 @@ static int SDLCALL emulator_event_filter(void *userdata, SDL_Event *event) {
         case SDLK_p:
           display_save("emu");
           return 0;
+        case SDLK_LEFT:
+          DISPLAY_GAMMA = fmaxf(0.0f, DISPLAY_GAMMA - 0.05f);
+          printf("DISPLAY_GAMMA: %0.2f\n", DISPLAY_GAMMA);
+          return 0;
+        case SDLK_RIGHT:
+          DISPLAY_GAMMA = fminf(8.0f, DISPLAY_GAMMA + 0.05f);
+          printf("DISPLAY_GAMMA: %0.2f\n", DISPLAY_GAMMA);
+          return 0;
       }
       break;
   }
diff --git a/core/embed/unix/display-unix.c b/core/embed/unix/display-unix.c
index 485f604398..d8e6fa0075 100644
--- a/core/embed/unix/display-unix.c
+++ b/core/embed/unix/display-unix.c
@@ -70,7 +70,7 @@ static SDL_Surface *PREV_SAVED;
 
 static int DISPLAY_BACKLIGHT = -1;
 static int DISPLAY_ORIENTATION = -1;
-static float DISPLAY_GAMMA = 0.55f;
+float DISPLAY_GAMMA = 0.55f;
 int sdl_display_res_x = DISPLAY_RESX, sdl_display_res_y = DISPLAY_RESY;
 int sdl_touch_offset_x, sdl_touch_offset_y;