diff --git a/build.sh b/build.sh
index 98c7e92..9101a13 100644
--- a/build.sh
+++ b/build.sh
@@ -10,6 +10,7 @@ fi
 
 # Build circle-stdlib library
 cd circle-stdlib/
+make clean
 ./configure -r ${RPI} --prefix "aarch64-none-elf-"
 make -j$(nproc)
 cd ..