diff --git a/src/nodes/node_exec.rs b/src/nodes/node_exec.rs
index 423c154..73f5a31 100644
--- a/src/nodes/node_exec.rs
+++ b/src/nodes/node_exec.rs
@@ -18,6 +18,7 @@ use std::io::Write;
 use ringbuf::{Consumer, Producer};
 use std::sync::Arc;
 
+#[cfg(not(target_arch = "wasm32"))]
 use core::arch::x86_64::{
     _MM_FLUSH_ZERO_ON,
     //    _MM_FLUSH_ZERO_OFF,
@@ -325,6 +326,7 @@ impl NodeExecutor {
                 GraphMessage::NewProg { prog, copy_old_out } => {
                     let mut prev_prog = std::mem::replace(&mut self.prog, prog);
 
+                    #[cfg(not(target_arch = "wasm32"))]
                     unsafe {
                         _MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
                     }