diff --git a/asm.js b/asm.js
index 4748b02..80b032a 100644
--- a/asm.js
+++ b/asm.js
@@ -186,12 +186,12 @@ const opcodes = {
     "i32.shr_u":     0x76,
 
     // Threads instructions
-    "memory.atomic.notify":  [ 0xfe, 0x00 ],
-    "memory.atomic.wait32":  [ 0xfe, 0x01 ],
-    "memory.atomic.load":    [ 0xfe, 0x10 ],
-    "memory.atomic.load8_u": [ 0xfe, 0x12 ],
-    "memory.atomic.store":   [ 0xfe, 0x17 ],
-    "memory.atomic.store8":  [ 0xfe, 0x19 ],
+    "memory.atomic.notify": [ 0xfe, 0x00 ],
+    "memory.atomic.wait32": [ 0xfe, 0x01 ],
+    "i32.atomic.load":      [ 0xfe, 0x10 ],
+    "i32.atomic.load8_u":   [ 0xfe, 0x12 ],
+    "i32.atomic.store":     [ 0xfe, 0x17 ],
+    "i32.atomic.store8":    [ 0xfe, 0x19 ],
 };
 
 const mem_flags = {