diff --git a/src/codegen.cpp b/src/codegen.cpp
index 37540584e7996..251e35a37f438 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -5180,11 +5180,10 @@ static Function* gen_cfun_wrapper(
             // Skip past function and return and sret attributes to the first real parameter
             for (auto it = attributes.index_begin() + 2 + sig.sret; it != attributes.index_end(); ++it) {
                 AttrBuilder toShiftTemp(attributes.getAttributes(it));
-                attributes = attributes.removeAttributes(jl_LLVMContext, it);
-                attributes = attributes.addAttributes(jl_LLVMContext, it, toShift);
+                attributes = attributes.setAttributes(jl_LLVMContext, it, toShift);
                 toShift = std::move(toShiftTemp);
             }
-            attributes = attributes.addAttributes(jl_LLVMContext, attributes.index_end(), toShift);
+            attributes = attributes.setAttributes(jl_LLVMContext, attributes.index_end(), toShift);
         }
 
         functype = FunctionType::get(sig.sret ? T_void : sig.prt, fargt_sig, /*isVa*/false);