diff --git a/README.md b/README.md
index 7b5d998..ec3fc73 100644
--- a/README.md
+++ b/README.md
@@ -155,5 +155,10 @@ cd build
 ../qt-everywhere-src-5.15.2/configure -release -no-opengl -no-eglfs -linuxfb -device linux-rasp-pi4-v3d-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf- -sysroot ~/rpi/sysroot -prefix /usr/local/qt5.15.2 -extprefix ~/rpi/qt5.15.2 -opensource -confirm-license -skip qtscript -skip qtwayland -skip qtwebengine -nomake tests -make libs -pkg-config -no-use-gold-linker -v -recheck
 ```
 
+Újrakezdéshez a build könyvtárat ki kell üríteni
+```
+rm -rf *
+```
+
 ### Qt Creator beállítása