diff --git a/lib/standard/lsp/diagnostic.rb b/lib/standard/lsp/diagnostic.rb
index 77f86387..260e8152 100644
--- a/lib/standard/lsp/diagnostic.rb
+++ b/lib/standard/lsp/diagnostic.rb
@@ -82,7 +82,7 @@ def autocorrect_action
             document_changes: [
               Interface::TextDocumentEdit.new(
                 text_document: Interface::OptionalVersionedTextDocumentIdentifier.new(
-                  uri: @uri.to_s,
+                  uri: ensure_uri_scheme(@uri.to_s).to_s,
                   version: nil
                 ),
                 edits: correctable? ? offense_replacements : []
@@ -113,7 +113,7 @@ def disable_line_action
             document_changes: [
               Interface::TextDocumentEdit.new(
                 text_document: Interface::OptionalVersionedTextDocumentIdentifier.new(
-                  uri: @uri.to_s,
+                  uri: ensure_uri_scheme(@uri.to_s).to_s,
                   version: nil
                 ),
                 edits: line_disable_comment
@@ -163,6 +163,12 @@ def length_of_line(line)
       def correctable?
         !@offense.corrector.nil?
       end
+
+      def ensure_uri_scheme(uri)
+        uri = URI.parse(uri)
+        uri.scheme = "file" if uri.scheme.nil?
+        uri
+      end
     end
   end
 end
diff --git a/test/standard/runners/lsp_test.rb b/test/standard/runners/lsp_test.rb
index e6adf3aa..d9fb7a62 100644
--- a/test/standard/runners/lsp_test.rb
+++ b/test/standard/runners/lsp_test.rb
@@ -65,7 +65,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {
@@ -84,7 +84,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {
@@ -120,7 +120,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {
@@ -139,7 +139,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {
@@ -176,7 +176,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {
@@ -196,7 +196,7 @@ def test_did_open
                   edit: {
                     documentChanges: [
                       {
-                        textDocument: {uri: "/path/to/file.rb", version: nil},
+                        textDocument: {uri: "file:///path/to/file.rb", version: nil},
                         edits: [
                           {
                             range: {