diff --git a/justfile b/justfile
index 3cea3b6..e2eb6f8 100644
--- a/justfile
+++ b/justfile
@@ -2,6 +2,7 @@ set-project-name projectname:
 	sed -i "s/CHANGEME/{{projectname}}/g" ./CMakeLists.txt ./src/CMakeLists.txt ./justfile .kdev4/*
 	mv ./src/CHANGEME.cpp ./src/{{projectname}}.cpp
 	sed -i "s/CHANGEME.cpp/{{projectname}}.cpp/g" ./justfile
+	rm -rf build bin
 
 generate:
 	cmake -S. -Bbuild