diff --git a/build-libbitcoind.sh b/build-libbitcoind.sh
index 41e9acb2..67ea6244 100755
--- a/build-libbitcoind.sh
+++ b/build-libbitcoind.sh
@@ -9,6 +9,7 @@ if test -e "${os_dir}/libbitcoind.so"; then
     echo 'libbitcoind.so ready.'
     exit 0
   fi
+  rm -rf libbitcoind
   rm -f "${os_dir}/libbitcoind.so"
 fi