diff --git a/src/structs/inspectdata.rs b/src/structs/inspectdata.rs
index a73262f..81731de 100644
--- a/src/structs/inspectdata.rs
+++ b/src/structs/inspectdata.rs
@@ -1,26 +1,26 @@
 use bollard::secret::{ImageInspect, ImageSummary};
 
 pub trait InspectData {
-    fn tags(&self) -> Option<Vec<String>>;
-    fn digests(&self) -> Option<Vec<String>>;
+    fn tags(&self) -> Option<&Vec<String>>;
+    fn digests(&self) -> Option<&Vec<String>>;
 }
 
 impl InspectData for ImageInspect {
-    fn tags(&self) -> Option<Vec<String>> {
-        self.repo_tags.clone()
+    fn tags(&self) -> Option<&Vec<String>> {
+        self.repo_tags.as_ref()
     }
 
-    fn digests(&self) -> Option<Vec<String>> {
-        self.repo_digests.clone()
+    fn digests(&self) -> Option<&Vec<String>> {
+        self.repo_digests.as_ref()
     }
 }
 
 impl InspectData for ImageSummary {
-    fn tags(&self) -> Option<Vec<String>> {
-        Some(self.repo_tags.clone())
+    fn tags(&self) -> Option<&Vec<String>> {
+        Some(&self.repo_tags)
     }
 
-    fn digests(&self) -> Option<Vec<String>> {
-        Some(self.repo_digests.clone())
+    fn digests(&self) -> Option<&Vec<String>> {
+        Some(&self.repo_digests)
     }
 }
diff --git a/src/utils/reference.rs b/src/utils/reference.rs
index 4fdd7b3..435f949 100644
--- a/src/utils/reference.rs
+++ b/src/utils/reference.rs
@@ -14,12 +14,13 @@ pub fn split(reference: &str) -> (String, String, String) {
                 Some(registry) => registry.as_str().to_owned(),
                 None => String::from(DEFAULT_REGISTRY),
             };
+            let is_default_registry = registry == DEFAULT_REGISTRY;
             return (
-                registry.clone(),
+                registry,
                 match c.name("repository") {
                     Some(repository) => {
                         let repo = repository.as_str().to_owned();
-                        if !repo.contains('/') && registry == DEFAULT_REGISTRY {
+                        if !repo.contains('/') && is_default_registry {
                             format!("library/{}", repo)
                         } else {
                             repo