diff --git a/README.md b/README.md
index b9d27e5..ed5e7ca 100644
--- a/README.md
+++ b/README.md
@@ -42,4 +42,4 @@ values to operands. The advantage of this approach is as follows:
 * It's fairly simple to represent all of this data in an intuitive data
   structure (in my opinion anyway)
   * For example, looping through operands is as simple as incrementing
-    `parser.oper` until `readarg_validate_oper` returns `0`.
+    `parser.oper` until `readarg_validate_arg` returns `0`.