diff --git a/build.sh b/build.sh
index 79382ad..80da62a 100755
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,9 @@ cd ./out/
 filename=$(find . -mindepth 1 -maxdepth 1 -name "blendOS-*.iso")
 date=${filename%-*}
 date=${date#*-}
-mkdir /iso/$date/
+if [ ! -d /iso/$date/ ]; then
+    mkdir /iso/$date/
+fi
 cp -r $filename /iso/$date/
 
 cd /iso/