diff --git a/files/entrypoint.sh b/files/entrypoint.sh
index 9f746a3..846233c 100644
--- a/files/entrypoint.sh
+++ b/files/entrypoint.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 cp -r /app/volume/* /app/workdir/
 /app/workdir/run.sh | tee output.log
-mkdir /app/volume/output
+mkdir -p /app/volume/output
 cp /app/workdir/results.xml /app/volume/output/
 cp /app/workdir/output.log /app/volume/output/