diff --git a/pkgs/development/python-modules/pyqt/5.x.nix b/pkgs/development/python-modules/pyqt/5.x.nix
index 0e033a9e45d..7c08b9f45d1 100644
--- a/pkgs/development/python-modules/pyqt/5.x.nix
+++ b/pkgs/development/python-modules/pyqt/5.x.nix
@@ -65,6 +65,7 @@ in buildPythonPackage {
   '';
 
   postInstall = ''
+    ln -s ${sip}/${python.sitePackages}/PyQt5/* $out/${python.sitePackages}/PyQt5
     for i in $out/bin/*; do
       wrapProgram $i --prefix PYTHONPATH : "$PYTHONPATH"
     done
diff --git a/pkgs/development/python-modules/sip/default.nix b/pkgs/development/python-modules/sip/default.nix
index f8cc7e8dc45..ee8a1ffbafc 100644
--- a/pkgs/development/python-modules/sip/default.nix
+++ b/pkgs/development/python-modules/sip/default.nix
@@ -14,6 +14,7 @@ buildPythonPackage rec {
 
   configurePhase = ''
     ${python.executable} ./configure.py \
+      --sip-module PyQt5.sip \
       -d $out/lib/${python.libPrefix}/site-packages \
       -b $out/bin -e $out/include
   '';