diff --git a/src/ntcore/NetworkTable.cs b/src/ntcore/NetworkTable.cs
index 6d6d5067..d1d1da02 100644
--- a/src/ntcore/NetworkTable.cs
+++ b/src/ntcore/NetworkTable.cs
@@ -211,7 +211,7 @@ public NtListener AddListener(EventFlags eventKinds, Action<NetworkTable, string
                 // Don't fully construct the lazy object
                 topicName = ntEvent.ValueData.Value.GetTopicName();
             }
-            if (topicName == null)
+            if (topicName is null)
             {
                 return;
             }
@@ -240,7 +240,7 @@ private class SubTableListenerHolder(int prefixLen, NetworkTable parent, Action<
 
         public void OnEvent(NetworkTableEvent ntEvent)
         {
-            if (ntEvent.TopicInfo == null)
+            if (ntEvent.TopicInfo is null)
             {
                 return;
             }
diff --git a/src/wpiutil/Sendable/SendableRegistery.cs b/src/wpiutil/Sendable/SendableRegistery.cs
index bdbc9add..abae3d2c 100644
--- a/src/wpiutil/Sendable/SendableRegistery.cs
+++ b/src/wpiutil/Sendable/SendableRegistery.cs
@@ -316,7 +316,7 @@ public static int GetDataHandle()
             }
 
             IDisposable? rv = null;
-            if (comp.m_data == null)
+            if (comp.m_data is null)
             {
                 comp.m_data = new IDisposable?[handle + 1];
             }
@@ -437,7 +437,7 @@ public static void ForeachLiveWindow(int dataHandle, Action<CallbackData> callba
             ForeachComponents.AddRange(components.Select(x => x.Value));
             foreach (var comp in ForeachComponents)
             {
-                if (comp.m_builder == null || comp.m_sendable == null)
+                if (comp.m_builder is null || comp.m_sendable is null)
                 {
                     continue;
                 }
@@ -468,7 +468,7 @@ public static void ForeachLiveWindow(int dataHandle, Action<CallbackData> callba
                 }
                 if (cbdata.Data is not null)
                 {
-                    if (comp.m_data == null)
+                    if (comp.m_data is null)
                     {
                         comp.m_data = new IDisposable[dataHandle + 1];
                     }