diff --git a/src/Features/CSharp/Portable/ChangeSignature/CSharpChangeSignatureService.cs b/src/Features/CSharp/Portable/ChangeSignature/CSharpChangeSignatureService.cs
index 18da424698ee9f11194b7d5bb6b0ad7a4a904ccd..ec1e1d81c09f6f9e71ca3578c8d0ff4a7a0d14cc 100644
--- a/src/Features/CSharp/Portable/ChangeSignature/CSharpChangeSignatureService.cs
+++ b/src/Features/CSharp/Portable/ChangeSignature/CSharpChangeSignatureService.cs
@@ -281,7 +281,7 @@ private SyntaxNode GetNodeContainingTargetNode(SyntaxNode matchingNode)
                 updatedNode.IsKind(SyntaxKind.DelegateDeclaration))
             {
                 var updatedLeadingTrivia = UpdateParamTagsInLeadingTrivia(document, updatedNode, declarationSymbol, signaturePermutation);
-                if (!updatedLeadingTrivia.IsEmpty)
+                if (updatedLeadingTrivia != default && !updatedLeadingTrivia.IsEmpty)
                 {
                     updatedNode = updatedNode.WithLeadingTrivia(updatedLeadingTrivia);
                 }