diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index 9f941637d8c..4a2e078c3a7 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -1231,7 +1231,7 @@ extern "C" uint64_t LLVMRustDIBuilderCreateOpPlusUconst() {
   return dwarf::DW_OP_plus_uconst;
 }
 
-extern "C" int64_t LLVMRustDIBuilderCreateOpLLVMFragment() {
+extern "C" uint64_t LLVMRustDIBuilderCreateOpLLVMFragment() {
   return dwarf::DW_OP_LLVM_fragment;
 }