diff --git a/src/main/python/ddadevops/c4k_mixin.py b/src/main/python/ddadevops/c4k_mixin.py
index 654c6ca..72f03c9 100644
--- a/src/main/python/ddadevops/c4k_mixin.py
+++ b/src/main/python/ddadevops/c4k_mixin.py
@@ -49,9 +49,9 @@ class C4kMixin(DevopsBuild):
         chmod(self.build_path() + '/out_auth.edn', 0o600)
 
     def c4k_apply(self):
-        cmd = [f'c4k-{self.c4k_module_name}-standalone.jar' +
-               self.build_path() + '/out_config.edn' + 
-               self.build_path() + '/out_auth.edn' + 
+        cmd = [f'c4k-{self.c4k_module_name}-standalone.jar',
+               self.build_path() + '/out_config.edn',
+               self.build_path() + '/out_auth.edn', 
                '> ' + self.build_path() + '/out_jitsi.yaml']
         output = execute(cmd, True)
         print(output)