diff --git a/serpent/opcodes.py b/serpent/opcodes.py
index b0d79e724..344582411 100644
--- a/serpent/opcodes.py
+++ b/serpent/opcodes.py
@@ -1,8 +1,8 @@
 opcodes = {
     0x00: ['STOP', 0, 0],
     0x01: ['ADD', 2, 1],
-    0x02: ['SUB', 2, 1],
-    0x03: ['MUL', 2, 1],
+    0x02: ['MUL', 2, 1],
+    0x03: ['SUB', 2, 1],
     0x04: ['DIV', 2, 1],
     0x05: ['SDIV', 2, 1],
     0x06: ['MOD', 2, 1],