diff --git a/lsp-server/src/protocol/window/progress.cppm b/lsp-server/src/protocol/window/progress.cppm
index 64318b1..a127576 100644
--- a/lsp-server/src/protocol/window/progress.cppm
+++ b/lsp-server/src/protocol/window/progress.cppm
@@ -56,12 +56,12 @@ export namespace lsp::protocol
         ProgressToken token;
     };
 
-    using TraceValue = std::string_view;
+    using TraceValue = string;
     namespace TraceValueLiterals
     {
-        inline constexpr TraceValue Off = "off";
-        inline constexpr TraceValue Messages = "messages";
-        inline constexpr TraceValue Verbose = "verbose";
+        inline const TraceValue Off = "off";
+        inline const TraceValue Messages = "messages";
+        inline const TraceValue Verbose = "verbose";
     }
 
     struct SetTraceParams
diff --git a/lsp-server/src/provider/trace/set_trace.cppm b/lsp-server/src/provider/trace/set_trace.cppm
index 86210ef..b742f84 100644
--- a/lsp-server/src/provider/trace/set_trace.cppm
+++ b/lsp-server/src/provider/trace/set_trace.cppm
@@ -1,7 +1,5 @@
 module;
 
-#include <string_view>
-
 export module lsp.provider.trace.set_trace;
 import spdlog;