diff --git a/electron_app/build/entitlements.mac.plist b/electron_app/build/entitlements.mac.plist
index cae02aea..9dd26e69 100644
--- a/electron_app/build/entitlements.mac.plist
+++ b/electron_app/build/entitlements.mac.plist
@@ -2,24 +2,24 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-        <!-- Entitlements from electron-builder's defaults
-             (https://github.com/electron-userland/electron-builder/blob/master/packages/app-builder-lib/templates/entitlements.mac.plist)
-             nb. This does *not* include the app sandbox: at the time of adding this file,
-             we were using electron-builder 21.2.0 which does not have the sandbox entitlement.
-             Latest electron-builder does, but it appears to be causing issues:
-             (https://github.com/electron-userland/electron-builder/issues/4390)
-        -->
-        <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
-	<true/>
-	<!-- https://github.com/electron-userland/electron-builder/issues/3940 -->
-	<key>com.apple.security.cs.disable-library-validation</key>
-	<true/>
+    <!-- Entitlements from electron-builder's defaults
+         (https://github.com/electron-userland/electron-builder/blob/master/packages/app-builder-lib/templates/entitlements.mac.plist)
+         nb. This does *not* include the app sandbox: at the time of adding this file,
+         we were using electron-builder 21.2.0 which does not have the sandbox entitlement.
+         Latest electron-builder does, but it appears to be causing issues:
+         (https://github.com/electron-userland/electron-builder/issues/4390)
+    -->
+    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
+    <true/>
+    <!-- https://github.com/electron-userland/electron-builder/issues/3940 -->
+    <key>com.apple.security.cs.disable-library-validation</key>
+    <true/>
 
-        <!-- Our own additional entitlements (we need to access the camera and
-            mic for VoIP calls -->
-	<key>com.apple.security.device.camera</key>
-	<true/>
-	<key>com.apple.security.device.audio-input</key>
-	<true/>
+    <!-- Our own additional entitlements (we need to access the camera and
+        mic for VoIP calls -->
+    <key>com.apple.security.device.camera</key>
+    <true/>
+    <key>com.apple.security.device.audio-input</key>
+    <true/>
 </dict>
 </plist>