diff --git a/store/src/db/sql.rs b/store/src/db/sql.rs
index c29a50ba3..b0ffdb557 100644
--- a/store/src/db/sql.rs
+++ b/store/src/db/sql.rs
@@ -720,7 +720,7 @@ pub fn apply_block(
 
 /// Returns the high 16 bits of the provided nullifier.
 pub(crate) fn get_nullifier_prefix(nullifier: &Nullifier) -> u32 {
-    (nullifier.most_significant_felt().as_int() >> 16) as u32
+    (nullifier.most_significant_felt().as_int() >> 48) as u32
 }
 
 /// Converts a `u64` into a [Value].