diff --git a/specs/core/0_fork-choice.md b/specs/core/0_fork-choice.md
index e4ea773c8..f57fd84b8 100644
--- a/specs/core/0_fork-choice.md
+++ b/specs/core/0_fork-choice.md
@@ -73,8 +73,8 @@ class Store(object):
     states: Dict[Bytes32, BeaconState] = field(default_factory=dict)
     time: int = 0
     latest_targets: Dict[ValidatorIndex, Target] = field(default_factory=dict)
-    justified_root: Bytes32 = ZERO_HASH
-    finalized_root: Bytes32 = ZERO_HASH
+    justified_root: Bytes32
+    finalized_root: Bytes32
 ```
 
 ### Helpers