diff --git a/crates/deltalake-core/Cargo.toml b/crates/deltalake-core/Cargo.toml
index ce1c7490ad..a670456363 100644
--- a/crates/deltalake-core/Cargo.toml
+++ b/crates/deltalake-core/Cargo.toml
@@ -130,6 +130,7 @@ tempfile = "3"
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 utime = "0.3"
 hyper = { version = "0.14", features = ["server"] }
+criterion = "0.5"
 
 [features]
 azure = ["object_store/azure"]
diff --git a/crates/deltalake-core/benches/read_checkpoint.rs b/crates/deltalake-core/benches/read_checkpoint.rs
index 2ecbee661b..0db72c3e17 100644
--- a/crates/deltalake-core/benches/read_checkpoint.rs
+++ b/crates/deltalake-core/benches/read_checkpoint.rs
@@ -1,6 +1,6 @@
 use criterion::{criterion_group, criterion_main, Criterion};
-use deltalake::table::state::DeltaTableState;
-use deltalake::DeltaTableConfig;
+use deltalake_core::table::state::DeltaTableState;
+use deltalake_core::DeltaTableConfig;
 use std::fs::File;
 use std::io::Read;
 
diff --git a/crates/deltalake-core/src/operations/transaction/protocol.rs b/crates/deltalake-core/src/operations/transaction/protocol.rs
index 23dd3c2e52..8bceba74ce 100644
--- a/crates/deltalake-core/src/operations/transaction/protocol.rs
+++ b/crates/deltalake-core/src/operations/transaction/protocol.rs
@@ -78,14 +78,11 @@ impl ProtocolChecker {
                 .difference(&self.reader_features)
                 .cloned()
                 .collect();
-            if diff.is_empty() {
-                Ok(())
-            } else {
-                Err(TransactionError::UnsupportedReaderFeatures(diff))
+            if !diff.is_empty() {
+                return Err(TransactionError::UnsupportedReaderFeatures(diff));
             }
-        } else {
-            return Ok(());
-        }
+        };
+        Ok(())
     }
 
     /// Check if delta-rs can write to the given delta table.
@@ -108,15 +105,11 @@ impl ProtocolChecker {
                 .difference(&self.writer_features)
                 .cloned()
                 .collect();
-            if diff.is_empty() {
-                Ok(())
-            } else {
-                Err(TransactionError::UnsupportedWriterFeatures(diff))
+            if !diff.is_empty() {
+                return Err(TransactionError::UnsupportedWriterFeatures(diff));
             }
-        } else {
-            // TODO: check if this is correct
-            Ok(())
-        }
+        };
+        Ok(())
     }
 }