diff --git a/test/cs/ChoicesTest.cs b/test/cs/ChoicesTest.cs
index 4567906..6af0e5d 100644
--- a/test/cs/ChoicesTest.cs
+++ b/test/cs/ChoicesTest.cs
@@ -1,6 +1,5 @@
 namespace canopy.choices {
     using System.Collections.Generic;
-    using System.Collections;
     using System;
 
     using Microsoft.VisualStudio.TestTools.UnitTesting;
diff --git a/test/cs/NodeActionsTest.cs b/test/cs/NodeActionsTest.cs
index c4fa542..84c70a1 100644
--- a/test/cs/NodeActionsTest.cs
+++ b/test/cs/NodeActionsTest.cs
@@ -1,9 +1,10 @@
 namespace canopy.node_actions {
     using System.Collections.Generic;
-    using System.Collections;
-    using System;
     using System.Linq;
+    using System;
+
     using Microsoft.VisualStudio.TestTools.UnitTesting;
+
     using canopy.test.grammars.node_actions;
 
     [TestClass]
diff --git a/test/cs/PredicatesTest.cs b/test/cs/PredicatesTest.cs
index 7cde2a2..3354241 100644
--- a/test/cs/PredicatesTest.cs
+++ b/test/cs/PredicatesTest.cs
@@ -1,6 +1,5 @@
 namespace canopy.predicates {
     using System.Collections.Generic;
-    using System.Collections;
     using System;
 
     using Microsoft.VisualStudio.TestTools.UnitTesting;
diff --git a/test/cs/QuantifiersTest.cs b/test/cs/QuantifiersTest.cs
index fa3f442..3f753cd 100644
--- a/test/cs/QuantifiersTest.cs
+++ b/test/cs/QuantifiersTest.cs
@@ -1,6 +1,5 @@
 namespace canopy.quantifiers {
     using System.Collections.Generic;
-    using System.Collections;
     using System;
 
     using Microsoft.VisualStudio.TestTools.UnitTesting;
diff --git a/test/cs/SequencesTest.cs b/test/cs/SequencesTest.cs
index b3ba48d..fbd9762 100644
--- a/test/cs/SequencesTest.cs
+++ b/test/cs/SequencesTest.cs
@@ -1,6 +1,5 @@
 namespace canopy.sequences {
     using System.Collections.Generic;
-    using System.Collections;
     using System;
 
     using Microsoft.VisualStudio.TestTools.UnitTesting;
diff --git a/test/cs/TerminalsTest.cs b/test/cs/TerminalsTest.cs
index 1d2a714..a6b29b2 100644
--- a/test/cs/TerminalsTest.cs
+++ b/test/cs/TerminalsTest.cs
@@ -1,6 +1,5 @@
 namespace canopy.terminals {
     using System.Collections.Generic;
-    using System.Collections;
     using System;
 
     using Microsoft.VisualStudio.TestTools.UnitTesting;
diff --git a/test/cs/helpers/ElementsSpec.cs b/test/cs/helpers/ElementsSpec.cs
index 29f4533..bd9db9c 100644
--- a/test/cs/helpers/ElementsSpec.cs
+++ b/test/cs/helpers/ElementsSpec.cs
@@ -1,7 +1,4 @@
-//package helpers;
-
 using System.Collections.Generic;
-using System.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 public class ElementsSpec<L> {
diff --git a/test/cs/helpers/Node.cs b/test/cs/helpers/Node.cs
index 0d35301..3cfab3e 100644
--- a/test/cs/helpers/Node.cs
+++ b/test/cs/helpers/Node.cs
@@ -1,7 +1,6 @@
 //package helpers;
 
 using System.Collections.Generic;
-using System.Collections;
 using System;
 
 public interface Node<L> {
diff --git a/test/cs/helpers/NodeSpec.cs b/test/cs/helpers/NodeSpec.cs
index 5a164cc..124a844 100644
--- a/test/cs/helpers/NodeSpec.cs
+++ b/test/cs/helpers/NodeSpec.cs
@@ -1,7 +1,4 @@
-//package helpers;
-
 using System.Collections.Generic;
-using System.Collections;
 using System;
 using Microsoft.VisualStudio.TestTools.UnitTesting;