diff --git a/atom-extensions/atom-boot-java/lib/main.js b/atom-extensions/atom-boot-java/lib/main.js
index f1da3af07..2deeda8c6 100644
--- a/atom-extensions/atom-boot-java/lib/main.js
+++ b/atom-extensions/atom-boot-java/lib/main.js
@@ -73,7 +73,7 @@ class BootJavaLanguageClient extends JavaProcessLanguageClient {
                 '-Dorg.slf4j.simpleLogger.logFile=boot-java.log',
                 '-Dorg.slf4j.simpleLogger.defaultLogLevel=debug',
                 '-cp',
-                `${toolsJar ? `${toolsJar}:` : ''}${lsJar}`
+                `${toolsJar ? `${toolsJar}${path.delimiter}` : ''}${lsJar}`
             ];
         });
     }
diff --git a/atom-extensions/atom-boot-java/styles/hints.atom-text-editor.less b/atom-extensions/atom-boot-java/styles/hints.atom-text-editor.less
index 469540c21..471301487 100644
--- a/atom-extensions/atom-boot-java/styles/hints.atom-text-editor.less
+++ b/atom-extensions/atom-boot-java/styles/hints.atom-text-editor.less
@@ -4,7 +4,7 @@
   border-width: 1px;
 }
 
-atom-text-editor::shadow {
+atom-text-editor.editor {
   .gutter-boot-hint:before {
     content: url("atom://boot-java/styles/boot-icon.png");
     display: block;
diff --git a/vscode-extensions/commons-vscode/src/launch-util.ts b/vscode-extensions/commons-vscode/src/launch-util.ts
index 5ed9fe1bd..cab7bb3b3 100644
--- a/vscode-extensions/commons-vscode/src/launch-util.ts
+++ b/vscode-extensions/commons-vscode/src/launch-util.ts
@@ -101,7 +101,7 @@ export function activate(options: ActivatorOptions, context: VSCode.ExtensionCon
                                 const classpath = options.classpath(context);
                                 if (classpath) {
                                     args.push('-cp');
-                                    args.push(classpath.join(':'));
+                                    args.push(classpath.join(Path.delimiter));
                                 }
                             }
                             const launcher = options.launcher(context);