diff --git a/embed/extmod/modtrezorui/display-stm32.h b/embed/extmod/modtrezorui/display-stm32.h
index 13b22ab1f0..9869d63b45 100644
--- a/embed/extmod/modtrezorui/display-stm32.h
+++ b/embed/extmod/modtrezorui/display-stm32.h
@@ -332,9 +332,11 @@ void display_init(void)
 
 void display_refresh(void)
 {
+#if ! DISPLAY_GC9307
     // synchronize with the panel synchronization signal in order to avoid visual tearing effects
     while (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
     while (GPIO_PIN_SET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
+#endif
 }
 
 void display_save(const char *prefix)