diff --git a/chain/src/store.rs b/chain/src/store.rs
index c4028e7d9..b171f527d 100644
--- a/chain/src/store.rs
+++ b/chain/src/store.rs
@@ -50,7 +50,7 @@ const BLOCK_SPENT_PREFIX: u8 = b'S';
 const BLOCK_SPENT_COMMITMENT_PREFIX: u8 = b'C';
 
 /// Prefix for various boolean flags stored in the db.
-const BOOL_FLAG_PREFIX: u8 = b'B';
+const BOOL_FLAG_PREFIX: u8 = b'F';
 /// Boolean flag for v3 migration.
 const BLOCKS_V3_MIGRATED: &str = "blocks_v3_migrated";