diff -Nru paraview-5.0.1+dfsg1/debian/changelog paraview-5.0.1+dfsg1/debian/changelog
--- paraview-5.0.1+dfsg1/debian/changelog	2016-04-08 15:21:55.000000000 +0000
+++ paraview-5.0.1+dfsg1/debian/changelog	2016-04-15 23:01:12.000000000 +0000
@@ -1,3 +1,10 @@
+paraview (5.0.1+dfsg1-4) unstable; urgency=high
+
+  * [7451182] Roll back to Qt4. (Closes: #821091)
+  * [b77e3ee] Build documentation. (Closes: #820455)
+
+ -- Anton Gladky <gladk@debian.org>  Sat, 16 Apr 2016 01:01:02 +0200
+
 paraview (5.0.1+dfsg1-3) unstable; urgency=medium
 
   [ Graham Inggs ]
diff -Nru paraview-5.0.1+dfsg1/debian/control paraview-5.0.1+dfsg1/debian/control
--- paraview-5.0.1+dfsg1/debian/control	2016-04-08 15:20:51.000000000 +0000
+++ paraview-5.0.1+dfsg1/debian/control	2016-04-15 14:39:06.000000000 +0000
@@ -7,10 +7,8 @@
 Priority: extra
 Build-Depends: debhelper (>= 9),
                cmake,
-               qtbase5-dev-tools,
-               qttools5-dev-tools,
-               qttools5-dev,
-               qtbase5-dev,
+               libqt4-dev,
+               qt4-dev-tools,
                libsqlite3-dev,
                libboost-all-dev,
                libavformat-dev,
@@ -45,7 +43,7 @@
                libhdf5-dev,
                hdf5-tools,
                libgl2ps-dev,
-               libqt5webkit5-dev,
+               libqtwebkit-dev,
                libeigen3-dev,
                libnetcdf-dev,
                libnetcdf-cxx-legacy-dev,
@@ -98,7 +96,7 @@
 Package: paraview-dev
 Architecture: any
 Section: libdevel
-Depends: qtbase5-dev-tools,
+Depends: qt4-dev-tools,
          ${shlibs:Depends},
          ${misc:Depends},
          paraview (= ${binary:Version}),
diff -Nru paraview-5.0.1+dfsg1/debian/rules paraview-5.0.1+dfsg1/debian/rules
--- paraview-5.0.1+dfsg1/debian/rules	2016-04-07 12:22:58.000000000 +0000
+++ paraview-5.0.1+dfsg1/debian/rules	2016-04-15 22:59:19.000000000 +0000
@@ -8,7 +8,7 @@
 	dh $@ --with python2 --parallel
 
 export LD_LIBRARY_PATH+=:$(CURDIR)/debian/paraview/usr/lib/paraview
-export QT_SELECT=qt5
+export QT_SELECT=qt4
 
 CPPFLAGS:=$(shell dpkg-buildflags --get CPPFLAGS)
 CFLAGS:=$(shell dpkg-buildflags --get CFLAGS) $(CPPFLAGS) -Wall -pedantic
@@ -61,7 +61,8 @@
 	-DPARAVIEW_BUILD_PLUGIN_EyeDomeLighting:BOOL=ON \
 	-DPARAVIEW_BUILD_PLUGIN_MobileRemoteControl=OFF \
 	-DEigen_DIR=/usr/include/eigen3 \
-	-DPARAVIEW_QT_VERSION=5
+	-DPARAVIEW_BUILD_WEB_DOCUMENTATION=ON \
+	-DPARAVIEW_QT_VERSION=4
   
 override_dh_auto_configure:
 	dh_auto_configure -- $(extra_flags)