diff --git a/defs/opt_operand.def b/defs/opt_operand.def
index ab7103a421..887e3da49a 100644
--- a/defs/opt_operand.def
+++ b/defs/opt_operand.def
@@ -1,5 +1,5 @@
 #
-# configration file for operand union optimization
+# configuration file for operand union optimization
 #
 # format:
 #   [insn name] op1, op2 ...