diff --git a/prepare.py b/prepare.py
index ad9505990ee64b94fd703f633230546fcdf14b6f..ff074d3e0ac2cff0d371295e2597abb6a22c1c58 100644
--- a/prepare.py
+++ b/prepare.py
@@ -30,7 +30,7 @@ def provision_server(
         image=image.id,
         auto_ip=floating_ip,
         wait=True,
-        timeout=env.SERVER_CREATION_TIMEOUT,
+        timeout=int(env.SERVER_CREATION_TIMEOUT),
         boot_from_volume=True,
         terminate_volume=True,
         volume_size=env.VOLUME_SIZE,