diff --git a/columnar/src/block_accessor.rs b/columnar/src/block_accessor.rs
index b04d640f0..6f47a97eb 100644
--- a/columnar/src/block_accessor.rs
+++ b/columnar/src/block_accessor.rs
@@ -139,7 +139,7 @@ mod tests {
             missing_docs.push(missing_doc);
         });
 
-        assert_eq!(missing_docs, vec![]);
+        assert_eq!(missing_docs, Vec::<u32>::new());
     }
 
     #[test]
diff --git a/columnar/src/columnar/merge/tests.rs b/columnar/src/columnar/merge/tests.rs
index 1eea5e9ef..206d5da5f 100644
--- a/columnar/src/columnar/merge/tests.rs
+++ b/columnar/src/columnar/merge/tests.rs
@@ -403,11 +403,11 @@ fn test_merge_columnar_different_types() {
         panic!()
     };
     assert_eq!(vals.get_cardinality(), Cardinality::Optional);
-    assert_eq!(vals.values_for_doc(0).collect_vec(), vec![]);
-    assert_eq!(vals.values_for_doc(1).collect_vec(), vec![]);
-    assert_eq!(vals.values_for_doc(2).collect_vec(), vec![]);
+    assert_eq!(vals.values_for_doc(0).collect_vec(), Vec::<i64>::new());
+    assert_eq!(vals.values_for_doc(1).collect_vec(), Vec::<i64>::new());
+    assert_eq!(vals.values_for_doc(2).collect_vec(), Vec::<i64>::new());
     assert_eq!(vals.values_for_doc(3).collect_vec(), vec![1]);
-    assert_eq!(vals.values_for_doc(4).collect_vec(), vec![]);
+    assert_eq!(vals.values_for_doc(4).collect_vec(), Vec::<i64>::new());
 
     // text column
     let dynamic_column = cols[1].open().unwrap();
diff --git a/stacker/src/expull.rs b/stacker/src/expull.rs
index 58128d680..5fd00db3d 100644
--- a/stacker/src/expull.rs
+++ b/stacker/src/expull.rs
@@ -160,7 +160,7 @@ mod tests {
         {
             let mut buffer = Vec::new();
             stack.read_to_end(&arena, &mut buffer);
-            assert_eq!(&buffer[..], &[]);
+            assert_eq!(&buffer[..], &[] as &[u8]);
         }
     }