diff -Nru vtk6-6.2.0+dfsg1/debian/changelog vtk6-6.2.0+dfsg1/debian/changelog
--- vtk6-6.2.0+dfsg1/debian/changelog	2016-02-06 11:04:50.000000000 +0000
+++ vtk6-6.2.0+dfsg1/debian/changelog	2016-02-10 09:18:24.000000000 +0000
@@ -1,3 +1,9 @@
+vtk6 (6.2.0+dfsg1-7ubuntu2) xenial; urgency=medium
+
+  * Fix building the java bindings on s390x.
+
+ -- Matthias Klose <doko@ubuntu.com>  Wed, 10 Feb 2016 10:17:49 +0100
+
 vtk6 (6.2.0+dfsg1-7ubuntu1) xenial; urgency=medium
 
   * Merge with Debian unstable, remaining changes:
diff -Nru vtk6-6.2.0+dfsg1/debian/patches/javac-heap.diff vtk6-6.2.0+dfsg1/debian/patches/javac-heap.diff
--- vtk6-6.2.0+dfsg1/debian/patches/javac-heap.diff	1970-01-01 00:00:00.000000000 +0000
+++ vtk6-6.2.0+dfsg1/debian/patches/javac-heap.diff	2016-02-10 09:19:16.000000000 +0000
@@ -0,0 +1,13 @@
+Index: b/Wrapping/Java/CMakeLists.txt
+===================================================================
+--- a/Wrapping/Java/CMakeLists.txt
++++ b/Wrapping/Java/CMakeLists.txt
+@@ -80,6 +80,8 @@ if(APPLE)
+   set(JAVAC_OPTIONS -J-Xmx512m)
+ endif()
+ 
++set(JAVAC_OPTIONS -J-Xmx1024m)
++
+ get_property(java_modules GLOBAL PROPERTY VTK_JAVA_WRAPPED)
+ foreach(module IN LISTS java_modules)
+   if(NOT ${module}_EXCLUDE_FROM_WRAPPING)
diff -Nru vtk6-6.2.0+dfsg1/debian/patches/series vtk6-6.2.0+dfsg1/debian/patches/series
--- vtk6-6.2.0+dfsg1/debian/patches/series	2016-01-31 20:26:55.000000000 +0000
+++ vtk6-6.2.0+dfsg1/debian/patches/series	2016-02-10 09:18:41.000000000 +0000
@@ -10,3 +10,4 @@
 95_ffmpeg_2.9.patch
 96_concurrent_vtkLookupTableMapData_fix.patch
 97_fix_latex_doxygen.patch
+javac-heap.diff