diff --git a/src/main.js b/src/main.js
index eef0b6d6..283aca7e 100644
--- a/src/main.js
+++ b/src/main.js
@@ -153,12 +153,21 @@ const trayImages = (() => {
     }
   case 'linux':
     {
-      const theme = config.trayIconTheme || 'light';
-      return {
-        normal: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconTemplate.png')),
-        unread: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconUnreadTemplate.png')),
-        mention: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconMentionTemplate.png'))
-      };
+      const theme = config.trayIconTheme;
+      try {
+        return {
+          normal: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconTemplate.png')),
+          unread: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconUnreadTemplate.png')),
+          mention: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', theme, 'MenuIconMentionTemplate.png'))
+        };
+      } catch (e) {
+        //Fallback for invalid theme setting
+        return {
+          normal: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', 'light', 'MenuIconTemplate.png')),
+          unread: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', 'light', 'MenuIconUnreadTemplate.png')),
+          mention: nativeImage.createFromPath(path.resolve(assetsDir, 'linux', 'light', 'MenuIconMentionTemplate.png'))
+        };
+      }
     }
   default:
     return {};