diff --git a/crates/core/src/operations/create.rs b/crates/core/src/operations/create.rs
index 2e58167a4e..e53ec43c95 100644
--- a/crates/core/src/operations/create.rs
+++ b/crates/core/src/operations/create.rs
@@ -606,7 +606,7 @@ mod tests {
         // Fail to create table with unknown Delta key
         let table = CreateBuilder::new()
             .with_location("memory://")
-            .with_columns(schema.fields().clone())
+            .with_columns(schema.fields().cloned())
             .with_configuration(config.clone())
             .await;
         assert!(table.is_err());
@@ -614,7 +614,7 @@ mod tests {
         // Succeed in creating table with unknown Delta key since we set raise_if_key_not_exists to false
         let table = CreateBuilder::new()
             .with_location("memory://")
-            .with_columns(schema.fields().clone())
+            .with_columns(schema.fields().cloned())
             .with_raise_if_key_not_exists(false)
             .with_configuration(config)
             .await;
diff --git a/crates/core/src/operations/transaction/protocol.rs b/crates/core/src/operations/transaction/protocol.rs
index 5591d46742..d1ab9269bc 100644
--- a/crates/core/src/operations/transaction/protocol.rs
+++ b/crates/core/src/operations/transaction/protocol.rs
@@ -163,7 +163,7 @@ impl ProtocolChecker {
         if (4..7).contains(&min_writer_version) {
             debug!("min_writer_version is less 4-6, checking for unsupported table features");
             if let Ok(schema) = snapshot.metadata().schema() {
-                for field in schema.fields.iter() {
+                for field in schema.fields() {
                     if field.metadata.contains_key(
                         crate::kernel::ColumnMetadataKey::GenerationExpression.as_ref(),
                     ) {