diff --git a/src/alloy/runtime/runtime.cc b/src/alloy/runtime/runtime.cc
index e10d3ff38..95e27a2d2 100644
--- a/src/alloy/runtime/runtime.cc
+++ b/src/alloy/runtime/runtime.cc
@@ -91,10 +91,10 @@ int Runtime::Initialize(Frontend* frontend, Backend* backend) {
 #endif  // ALLOY_HAS_IVM_BACKEND
     if (FLAGS_runtime_backend == "any") {
 #if defined(ALLOY_HAS_X64_BACKEND) && ALLOY_HAS_X64_BACKEND
-      if (!backend) {
+      /*if (!backend) {
         backend = new alloy::backend::x64::X64Backend(
             this);
-      }
+      }*/
 #endif  // ALLOY_HAS_X64_BACKEND
 #if defined(ALLOY_HAS_IVM_BACKEND) && ALLOY_HAS_IVM_BACKEND
       if (!backend) {