diff --git a/reader.go b/reader.go
index 04cde7b..628cc79 100644
--- a/reader.go
+++ b/reader.go
@@ -247,7 +247,7 @@ func (r *Reader) ExpectOneOfString(str ...string) (string, error) {
 		}
 	}
 
-	return "", ErrNoMatchFound
+	return "", ErrNoMatchFound.New()
 }
 
 // Commit clears the internal buffer and therefore removes all data which were already read.