diff --git a/sub/xpat/src/parser.rs b/sub/xpat/src/parser.rs
index 38a40d4..2edae3e 100644
--- a/sub/xpat/src/parser.rs
+++ b/sub/xpat/src/parser.rs
@@ -37,7 +37,7 @@ pub enum PatError {
     DoubleNibble
 }
 impl PatError {
-    fn to_str(self) -> &'static str {
+    pub fn to_str(self) -> &'static str {
         match self {
             PatError::UnpairedHexDigit => "unpaired hex digit",
             PatError::UnknownChar => "unknown character",