diff --git a/app/builder-config-raspi.yaml b/app/builder-config-raspi.yaml
index e54d1df2..a9aa9f5f 100644
--- a/app/builder-config-raspi.yaml
+++ b/app/builder-config-raspi.yaml
@@ -1,7 +1,6 @@
 extends: app/builder-config-base.yaml
 linux:
   target:
-    - AppImage
     - target: deb
       arch:
         - armv7l
@@ -9,4 +8,5 @@ linux:
   category: Science
 deb:
   category: Science
+  fpm: ['--architecture', 'armhf']
 electronVersion: 3.0.13
diff --git a/src/App.vue b/src/App.vue
index 4718b53f..ce4a0bd2 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -63,6 +63,8 @@ export default {
 
     window.addEventListener('resize', this.handleResize)
     this.handleResize();
+
+    window.addEventListener('beforeunload', this.handleExit)
   },
 
   beforeDestroy: function () {
@@ -73,6 +75,11 @@ export default {
     handleResize: function(event) {
       this.window.width = window.innerWidth;
       this.window.height = window.innerHeight;
+    },
+
+    handleExit: function(event) {
+      console.log("Triggered beforeunload")
+      this.$root.$emit('globalTogglePreview', false)
     }
   }