diff -Nru geary-0.12~20170613/debian/changelog geary-0.12~20170613/debian/changelog
--- geary-0.12~20170613/debian/changelog	2017-08-10 09:05:03.000000000 +0000
+++ geary-0.12~20170613/debian/changelog	2017-08-10 12:52:08.000000000 +0000
@@ -1,3 +1,9 @@
+geary (0.12~20170613-0ubuntu4) artful; urgency=medium
+
+  * Try to fix geary on s390x
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Thu, 10 Aug 2017 14:52:08 +0200
+
 geary (0.12~20170613-0ubuntu3) artful; urgency=medium
 
   * Rebuild against libgmime3.
diff -Nru geary-0.12~20170613/debian/patches/series geary-0.12~20170613/debian/patches/series
--- geary-0.12~20170613/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ geary-0.12~20170613/debian/patches/series	2017-08-10 12:52:08.000000000 +0000
@@ -0,0 +1 @@
+vavala-casts.patch
diff -Nru geary-0.12~20170613/debian/patches/vavala-casts.patch geary-0.12~20170613/debian/patches/vavala-casts.patch
--- geary-0.12~20170613/debian/patches/vavala-casts.patch	1970-01-01 00:00:00.000000000 +0000
+++ geary-0.12~20170613/debian/patches/vavala-casts.patch	2017-08-10 12:52:08.000000000 +0000
@@ -0,0 +1,31 @@
+Bug: https://bugzilla.gnome.org/show_bug.cgi?id=783882
+
+--- geary-0.12~20170613.orig/src/client/web-process/web-process-extension.vala
++++ geary-0.12~20170613/src/client/web-process/web-process-extension.vala
+@@ -86,7 +86,7 @@ public class GearyWebExtension : Object
+     private bool should_load_remote_images(WebKit.WebPage page) {
+         bool should_load = false;
+         WebKit.Frame frame = page.get_main_frame();
+-        JS.GlobalContext context = frame.get_javascript_global_context();
++        JS.GlobalContext context = (JS.GlobalContext) frame.get_javascript_global_context();
+         try {
+             JS.Value ret = execute_script(
+                 context, "geary.allowRemoteImages", int.parse("__LINE__")
+@@ -103,7 +103,7 @@ public class GearyWebExtension : Object
+ 
+     private void remote_image_load_blocked(WebKit.WebPage page) {
+         WebKit.Frame frame = page.get_main_frame();
+-        JS.GlobalContext context = frame.get_javascript_global_context();
++        JS.GlobalContext context = (JS.GlobalContext) frame.get_javascript_global_context();
+         try {
+             execute_script(
+                 context, "geary.remoteImageLoadBlocked();", int.parse("__LINE__")
+@@ -118,7 +118,7 @@ public class GearyWebExtension : Object
+ 
+     private void selection_changed(WebKit.WebPage page) {
+         WebKit.Frame frame = page.get_main_frame();
+-        JS.GlobalContext context = frame.get_javascript_global_context();
++        JS.GlobalContext context = (JS.GlobalContext) frame.get_javascript_global_context();
+         try {
+             execute_script(
+                 context, "geary.selectionChanged();", int.parse("__LINE__")