diff --git a/hathor/conf/mainnet.py b/hathor/conf/mainnet.py
index fedb8f6fc..5680fedf2 100644
--- a/hathor/conf/mainnet.py
+++ b/hathor/conf/mainnet.py
@@ -213,7 +213,7 @@
         '00004305882eb3eef6b45f025ff58eb7baa5ca35f7d6f42c8b085482b00474e6',
         '000045ecbab77c9a8d819ff6d26893b9da2774eee5539f17d8fc2394f82b758e',
     ])),
-    ENABLE_NANO_CONTRACTS=NanoContractsSetting.FEATURE_ACTIVATION,
+    ENABLE_NANO_CONTRACTS=NanoContractsSetting.DISABLED,
     FEATURE_ACTIVATION=FeatureActivationSettings(
         features={
             Feature.INCREASE_MAX_MERKLE_PATH_LENGTH: Criteria(
diff --git a/hathor/conf/mainnet.yml b/hathor/conf/mainnet.yml
index 9ad38ebfa..f83a8e4be 100644
--- a/hathor/conf/mainnet.yml
+++ b/hathor/conf/mainnet.yml
@@ -194,7 +194,7 @@ SOFT_VOIDED_TX_IDS:
   - 00004305882eb3eef6b45f025ff58eb7baa5ca35f7d6f42c8b085482b00474e6
   - 000045ecbab77c9a8d819ff6d26893b9da2774eee5539f17d8fc2394f82b758e
 
-ENABLE_NANO_CONTRACTS: feature_activation
+ENABLE_NANO_CONTRACTS: disabled
 FEATURE_ACTIVATION:
   features:
     INCREASE_MAX_MERKLE_PATH_LENGTH: