diff --git a/src/storage/file_id.rs b/src/storage/file_id.rs
index 6bbc4ea1..645669b7 100644
--- a/src/storage/file_id.rs
+++ b/src/storage/file_id.rs
@@ -31,10 +31,10 @@ impl Into<String> for FileIDType {
 
 }
 
-impl From<String> for FileIDType {
+impl<'a> From<&'a str> for FileIDType {
 
-    fn from(s: String) -> FileIDType {
-        match &s[..] {
+    fn from(s: &'a str) -> FileIDType {
+        match s {
             "UUID"  => FileIDType::UUID,
             _       => FileIDType::NONE,
         }
@@ -42,6 +42,14 @@ impl From<String> for FileIDType {
 
 }
 
+impl From<String> for FileIDType {
+
+    fn from(s: String) -> FileIDType {
+        FileIDType::from(&s[..])
+    }
+
+}
+
 #[derive(Clone)]
 pub struct FileID {
     id: Option<String>,