diff --git a/src/Utilities/Compiler/Extensions/IOperationExtensions.cs b/src/Utilities/Compiler/Extensions/IOperationExtensions.cs
index a41577ab41..4428898bce 100644
--- a/src/Utilities/Compiler/Extensions/IOperationExtensions.cs
+++ b/src/Utilities/Compiler/Extensions/IOperationExtensions.cs
@@ -40,7 +40,7 @@ internal static partial class IOperationExtensions
                 {
                     return beforeConversion ?
                         GetReceiverType(firstArg.Value.Syntax, compilation, cancellationToken) :
-                        firstArg.Type as INamedTypeSymbol;
+                        firstArg.Value.Type as INamedTypeSymbol;
                 }
                 else if (invocation.TargetMethod.Parameters[0].IsParams)
                 {