diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index 399ead1..d8498e8 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -70,6 +70,13 @@ package_python-pyqt5(){
   # INSTALL_ROOT is needed for the QtDesigner module, the other Makefiles use DESTDIR
   make DESTDIR="$pkgdir" INSTALL_ROOT="$pkgdir" install -j1
 
+  # Remove unused py2 version of uic modules:
+  rm -rf "$pkgdir"/usr/lib/python*/site-packages/PyQt5/uic/port_v2
+
+  # compile Python bytecode
+  python -O -m compileall -d / "$pkgdir"/usr/lib
+  python -m compileall -d / "$pkgdir"/usr/lib
+
   # Provided by pyqt-common
   rm "$pkgdir"/usr/share/qt/qsci/api/python/PyQt5.api
 }
@@ -96,6 +103,13 @@ package_python2-pyqt5(){
   # INSTALL_ROOT is needed for the QtDesigner module, the other Makefiles use DESTDIR
   make DESTDIR="$pkgdir" INSTALL_ROOT="$pkgdir" install -j1
 
+  # Remove unused py3 version of uic modules:
+  rm -rf "$pkgdir"/usr/lib/python*/site-packages/PyQt5/uic/port_v3
+
+  # compile Python bytecode
+  python2 -O -m compileall -d / "$pkgdir"/usr/lib
+  python2 -m compileall -d / "$pkgdir"/usr/lib
+
   # Fix conflicts with python-pyqt5
   mv "$pkgdir"/usr/bin/{,python2-}pyuic5
   mv "$pkgdir"/usr/bin/{,python2-}pylupdate5