diff --git a/src/llvm_backend.cpp b/src/llvm_backend.cpp
index 01d18d868..2897d3ca7 100644
--- a/src/llvm_backend.cpp
+++ b/src/llvm_backend.cpp
@@ -790,7 +790,7 @@ gb_internal lbValue lb_generate_anonymous_proc_lit(lbModule *m, String const &pr
 	static std::atomic<i32> name_id;
 	name_id.fetch_add(1);
 
-	name_len = gb_snprintf(name_text, name_len, "%.*s$anon-%d", LIT(prefix_name), name_id);
+	name_len = gb_snprintf(name_text, name_len, "%.*s$anon-%d", LIT(prefix_name), name_id.load());
 	String name = make_string((u8 *)name_text, name_len-1);
 
 	Type *type = type_of_expr(expr);