diff --git a/k5test/realm.py b/k5test/realm.py
index 41155f2..486c277 100644
--- a/k5test/realm.py
+++ b/k5test/realm.py
@@ -673,7 +673,7 @@ def _kdc_conf(self):
 
     def create_kdb(self):
         self.run_kadminl(
-            ["stash", f"--key-file={self.tmpdir}/stash" "--random-password"]
+            ["stash", f"--key-file={self.tmpdir}/stash", "--random-password"]
         )
         self.run_kadminl(["init", self.realm], input="\n\n")