diff --git a/lib/gui/include/widgets/app.h b/lib/gui/include/widgets/app.h
index b82c1b4..9b5a87f 100644
--- a/lib/gui/include/widgets/app.h
+++ b/lib/gui/include/widgets/app.h
@@ -35,7 +35,7 @@ class App : public BasicWidget, public DrawableWidget {
 
 protected:
 
-#ifdef READ_PIXEL_ENABLED
+#ifdef MCUFRIEND_KBV_H_
     using display_t = MCUFRIEND_kbv;
 #else
     using display_t = Adafruit_GFX;
diff --git a/lib/gui/src/widgets/app.cpp b/lib/gui/src/widgets/app.cpp
index 63f8950..7a3cc4a 100644
--- a/lib/gui/src/widgets/app.cpp
+++ b/lib/gui/src/widgets/app.cpp
@@ -167,7 +167,7 @@ App *App::set_at(unsigned int x, unsigned int y, uint16_t color) {
 
 uint16_t App::get_at(unsigned int x, unsigned int y) const {
 
-#ifdef READ_PIXEL_ENABLED
+#ifdef MCUFRIEND_KBV_H_
     return display->readPixel(x, y);
 #else
     return 0;