diff --git a/lldb/source/Expression/ClangASTSource.cpp b/lldb/source/Expression/ClangASTSource.cpp
index c394a8cb6f0b14d1cb8262c326cd68d1e604837c..3b70c32d9326fb59d37a2c0a1d92f81b7507f42b 100644
--- a/lldb/source/Expression/ClangASTSource.cpp
+++ b/lldb/source/Expression/ClangASTSource.cpp
@@ -1792,8 +1792,7 @@ NameSearchContext::AddGenericFunDecl()
     proto_info.Variadic = true;
     
     QualType generic_function_type(m_ast_source.m_ast_context->getFunctionType (m_ast_source.m_ast_context->UnknownAnyTy,    // result
-                                                                                NULL,                                        // argument types
-                                                                                0,                                           // number of arguments
+                                                                                ArrayRef<QualType>(),                                        // argument types
                                                                                 proto_info));
     
     return AddFunDecl(generic_function_type.getAsOpaquePtr());