diff --git a/toolchain/lower/constant.cpp b/toolchain/lower/constant.cpp
index 0500857137c4..524cf0476599 100644
--- a/toolchain/lower/constant.cpp
+++ b/toolchain/lower/constant.cpp
@@ -287,7 +287,7 @@ static auto EmitAsConstant(ConstantContext& context, SemIR::StringLiteral inst)
   return llvm::IRBuilder<>(context.llvm_context())
       .CreateGlobalString(
           context.sem_ir().string_literal_values().Get(inst.string_literal_id),
-          /*name=*/"", /*address_space=*/0, &context.llvm_module());
+          /*Name=*/"", /*AddressSpace=*/0, &context.llvm_module());
 }
 
 static auto EmitAsConstant(ConstantContext& context,