diff --git a/src/coll-index.js b/src/coll-index.js
index ab5104e..266636d 100644
--- a/src/coll-index.js
+++ b/src/coll-index.js
@@ -252,7 +252,7 @@ class CollIndex extends LitElement
       <div class="sort-header is-small">
         <a @click=${(e) => this.hideHeader = !this.hideHeader} class="collapse button is-small">
           <span class="icon"><fa-icon .svg=${this.hideHeader ? fasArrowDown : fasArrowUp}></span>
-          <span>${this.hideHeader ? 'Collapse List' : 'Expand List'}</span>
+          <span>${this.hideHeader ? 'Show' : 'Hide'}</span>
         </a>
       </div>
       <nav class="panel is-light">
diff --git a/src/electron-main.js b/src/electron-main.js
index 9ffec57..bdcf7c6 100644
--- a/src/electron-main.js
+++ b/src/electron-main.js
@@ -72,6 +72,19 @@ var proxyTS;
 
 var mainWindow;
 
+// Single instance lock
+const gotTheLock = app.requestSingleInstanceLock();
+
+if (!gotTheLock) {
+  console.log("App already running, opening new window in first instance and quitting");
+  app.quit();
+} else {
+  app.on('second-instance', (event, commandLine, workingDirectory) => {
+    // Just create a new window in case of second instance request
+    createWindow();
+  });
+}
+
 
 function bufferToStream(data) {
   const rv = new PassThrough();
diff --git a/ui.js b/ui.js
index d1e2b1a..2eb3efa 100644
--- a/ui.js
+++ b/ui.js
@@ -563,7 +563,7 @@ const ae=new WeakMap,oe=v(e=>t=>{if(!(t instanceof T))throw new Error("unsafeSVG
       <div class="sort-header is-small">
         <a @click=${e=>this.hideHeader=!this.hideHeader} class="collapse button is-small">
           <span class="icon"><fa-icon .svg=${this.hideHeader?Be.a:Me.a}></span>
-          <span>${this.hideHeader?"Collapse List":"Expand List"}</span>
+          <span>${this.hideHeader?"Show":"Hide"}</span>
         </a>
       </div>
       <nav class="panel is-light">