diff --git a/helix-core/src/diagnostic.rs b/helix-core/src/diagnostic.rs
index 48a68dc02d2dd..41ee66c56a103 100644
--- a/helix-core/src/diagnostic.rs
+++ b/helix-core/src/diagnostic.rs
@@ -23,7 +23,7 @@ pub struct Range {
     pub end: usize,
 }
 
-#[derive(Debug, Eq, Hash, PartialEq, Clone, Deserialize, Serialize)]
+#[derive(Debug, Eq, Hash, PartialEq, Clone)]
 pub enum NumberOrString {
     Number(i32),
     String(String),
diff --git a/helix-lsp/src/lib.rs b/helix-lsp/src/lib.rs
index b6e364239ff1d..7cf9af5bcce5c 100644
--- a/helix-lsp/src/lib.rs
+++ b/helix-lsp/src/lib.rs
@@ -78,10 +78,10 @@ pub mod util {
             Error => lsp::DiagnosticSeverity::ERROR,
         });
 
-        let code = match diag.code.clone() {
+        let code = match diag.code.as_ref() {
             Some(x) => match x {
-                NumberOrString::Number(x) => Some(lsp::NumberOrString::Number(x)),
-                NumberOrString::String(x) => Some(lsp::NumberOrString::String(x)),
+                NumberOrString::Number(n) => Some(lsp::NumberOrString::Number(*n)),
+                NumberOrString::String(s) => Some(lsp::NumberOrString::String(s.to_string())),
             },
             None => None,
         };
diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs
index 737b1cadf029b..2f22f0f9717b9 100644
--- a/helix-term/src/application.rs
+++ b/helix-term/src/application.rs
@@ -557,13 +557,13 @@ impl Application {
                                         }
                                     };
 
-                                    let code = match diagnostic.code.clone() {
+                                    let code = match diagnostic.code.as_ref() {
                                         Some(x) => match x {
-                                            lsp::NumberOrString::Number(x) => {
-                                                Some(NumberOrString::Number(x))
+                                            lsp::NumberOrString::Number(n) => {
+                                                Some(NumberOrString::Number(*n))
                                             }
-                                            lsp::NumberOrString::String(x) => {
-                                                Some(NumberOrString::String(x))
+                                            lsp::NumberOrString::String(s) => {
+                                                Some(NumberOrString::String(s.to_string()))
                                             }
                                         },
                                         None => None,