diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index b2b9d7de2cb273e4f86085c7acde74448deb4514..2f66c568239e50ca5fe4fe20a7aa025262fa6e40 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -2572,7 +2572,7 @@ pub const DeclGen = struct {
         }
         dg.addFnAttr(llvm_fn, "nounwind");
         if (comp.unwind_tables) {
-            dg.addFnAttrString(llvm_fn, "uwtable", "sync");
+            dg.addFnAttrInt(llvm_fn, "uwtable", 2);
         }
         if (comp.bin_file.options.skip_linker_dependencies or
             comp.bin_file.options.no_builtin)
diff --git a/src/stage1/codegen.cpp b/src/stage1/codegen.cpp
index 2341ad4483d58d79fc417bb7857a4f8320d52c07..bd572bb96c60a2528cf0123aac75e8152df4793d 100644
--- a/src/stage1/codegen.cpp
+++ b/src/stage1/codegen.cpp
@@ -223,7 +223,7 @@ static ZigLLVM_CallingConv get_llvm_cc(CodeGen *g, CallingConvention cc) {
 
 static void add_uwtable_attr(CodeGen *g, LLVMValueRef fn_val) {
     if (g->unwind_tables) {
-        addLLVMFnAttrStr(fn_val, "uwtable", "sync");
+        addLLVMFnAttrInt(fn_val, "uwtable", 2);
     }
 }