diff --git a/Bonsai.System/IO/Ports/PortNameConverter.cs b/Bonsai.System/IO/Ports/PortNameConverter.cs
index 5e3b04d52..f00d0c85c 100644
--- a/Bonsai.System/IO/Ports/PortNameConverter.cs
+++ b/Bonsai.System/IO/Ports/PortNameConverter.cs
@@ -20,6 +20,7 @@ public override StandardValuesCollection GetStandardValues(ITypeDescriptorContex
                 if (workflowBuilder != null)
                 {
                     var portNames = (from builder in workflowBuilder.Workflow.Descendants()
+                                     where builder is not DisableBuilder
                                      let createPort = ExpressionBuilder.GetWorkflowElement(builder) as CreateSerialPort
                                      where createPort != null && !string.IsNullOrEmpty(createPort.PortName)
                                      select !string.IsNullOrEmpty(createPort.Name) ? createPort.Name : createPort.PortName)
diff --git a/Bonsai.System/Resources/ResourceNameConverter.cs b/Bonsai.System/Resources/ResourceNameConverter.cs
index 5dd73c529..f9b06207f 100644
--- a/Bonsai.System/Resources/ResourceNameConverter.cs
+++ b/Bonsai.System/Resources/ResourceNameConverter.cs
@@ -48,6 +48,7 @@ static IEnumerable<ExpressionBuilder> SelectContextElements(ExpressionBuilderGra
             foreach (var node in source)
             {
                 var element = ExpressionBuilder.Unwrap(node.Value);
+                if (element is DisableBuilder) continue;
                 yield return element;
 
                 var workflowBuilder = element as IWorkflowExpressionBuilder;