diff --git a/apps/src/lib/node/ledger/storage/mod.rs b/apps/src/lib/node/ledger/storage/mod.rs
index 7a1f44e6f90..d5c6a91abcf 100644
--- a/apps/src/lib/node/ledger/storage/mod.rs
+++ b/apps/src/lib/node/ledger/storage/mod.rs
@@ -377,7 +377,8 @@ mod tests {
                     "At height {height} will {}",
                     if write_value { "write" } else { "delete" }
                 );
-                (BlockHeight::from(height as u64), write_value)
+                // start from height 1 - 0 is sentinel
+                (BlockHeight::from(height as u64 + 1), write_value)
             });
 
         let key = Key::parse("key").expect("cannot parse the key string");
diff --git a/core/src/ledger/storage/mod.rs b/core/src/ledger/storage/mod.rs
index c8829f64da8..14ac88fead5 100644
--- a/core/src/ledger/storage/mod.rs
+++ b/core/src/ledger/storage/mod.rs
@@ -614,8 +614,8 @@ where
         }
     }
 
-    /// Returns a value from the specified subspace at the given height and the
-    /// gas cost
+    /// Returns a value from the specified subspace at the given height or the
+    /// last committed height when 0 and the gas cost.
     pub fn read_with_height(
         &self,
         key: &Key,