diff --git a/op-zircuit-mainnet.cfg b/op-zircuit-mainnet.cfg
index 6dacb2a4..f77e35da 100644
--- a/op-zircuit-mainnet.cfg
+++ b/op-zircuit-mainnet.cfg
@@ -10,7 +10,7 @@
       enabled:
         - name: txpool_content
         - name: zirc_getQuarantineHistory
-	- name: zirc_getQuarantined
+        - name: zirc_getQuarantined
     connection:
       generic:
         rpc: