diff --git a/pkstrings/src/pkstring.rs b/pkstrings/src/pkstring.rs
index f2f0a5d..9441d6e 100644
--- a/pkstrings/src/pkstring.rs
+++ b/pkstrings/src/pkstring.rs
@@ -202,13 +202,13 @@ impl From<PKString> for Vec<u8> {
     }
 }
 
-impl From<PKString> for String {
-    fn from(pkstr: PKString) -> String {
+impl From<&PKString> for String {
+    fn from(pkstr: &PKString) -> String {
         let placeholder = '_';
         let mut buf = String::new();
 
-        for ord in pkstr.0 {
-            match hextochr(ord) {
+        for ord in &pkstr.0 {
+            match hextochr(*ord) {
                 Some(chr) => buf.push(chr),
                 None => buf.push(placeholder.clone()),
             }