diff --git a/src/Compilers/CSharp/Portable/Binder/Binder_Expressions.cs b/src/Compilers/CSharp/Portable/Binder/Binder_Expressions.cs
index f285780bc03e6..d2e2524286523 100644
--- a/src/Compilers/CSharp/Portable/Binder/Binder_Expressions.cs
+++ b/src/Compilers/CSharp/Portable/Binder/Binder_Expressions.cs
@@ -2090,12 +2090,12 @@ private BoundExpression BindNonMethod(SimpleNameSyntax node, Symbol symbol, Bind
                         }
                         else if (parameter.IsExtensionParameter() &&
                                 (InParameterDefaultValue || InAttributeArgument ||
-                                 this.ContainingMember() is not { Kind: not SymbolKind.NamedType, IsStatic: false } || // We are not in an instance member
+                                 this.ContainingMember() is null or { Kind: SymbolKind.NamedType } or { IsStatic: true } || // We are not in an instance member
                                  (object)this.ContainingMember().ContainingSymbol != parameter.ContainingSymbol) &&
                                 !IsInsideNameof)
                         {
                             // Give a better error for the simple case of using an extension parameter in a static member, while avoiding any of the other cases where it is always illegal
-                            if (this.ContainingMember().IsStatic && !InParameterDefaultValue && !InAttributeArgument && (object)this.ContainingMember().ContainingSymbol == parameter.ContainingSymbol)
+                            if (this.ContainingMember() is { IsStatic: true } && !InParameterDefaultValue && !InAttributeArgument && (object)this.ContainingMember().ContainingSymbol == parameter.ContainingSymbol)
                             {
                                 // Static members cannot access the value of extension parameter '{0}'.
                                 Error(diagnostics, ErrorCode.ERR_ExtensionParameterInStaticContext, node, parameter.Name);