diff --git a/debian/control b/debian/control
index 91fa3f1..5fd0b2c 100644
--- a/debian/control
+++ b/debian/control
@@ -11,7 +11,8 @@
                doxygen,
                swig,
                libxml2-dev,
-               python3-all-dev,
+               python3-dev,
+# should be python3-all-dev but build system can only deal with one Python interpreter
                perl,
                libperl-dev,
                default-jdk-headless,
@@ -64,7 +65,6 @@
 
 Package: python3-sbml5
 Architecture: any
-Multi-Arch: same
 Section: python
 Depends: ${shlibs:Depends},
          ${misc:Depends},
diff --git a/debian/python3-sbml5.install b/debian/python3-sbml5.install
index 0e92156..607c065 100644
--- a/debian/python3-sbml5.install
+++ b/debian/python3-sbml5.install
@@ -1 +1 @@
-usr/lib/*/python*
+usr/lib/python*
diff --git a/debian/rules b/debian/rules
index 38d5344..8087be5 100755
--- a/debian/rules
+++ b/debian/rules
@@ -72,7 +72,10 @@
 #	dh_auto_install -O--buildsystem=pybuild # unfortunately there is no setup.py
 	set -x ; \
 	for pyv in `py3versions -s` ; do \
-	    test -e $(debtmp)/usr/lib/*/$${pyv}/site-packages && mv $(debtmp)/usr/lib/*/python$${pyv}/site-packages $(debtmp)/usr/lib/python$${pyv}/dist-packages || true ; \
+	    if [ -d $(debtmp)/usr/lib/*/$${pyv}/site-packages/ ] ; then \
+		mkdir -p $(debtmp)/usr/lib/$${pyv}/dist-packages ; \
+		mv $(debtmp)/usr/lib/*/$${pyv}/site-packages/* $(debtmp)/usr/lib/$${pyv}/dist-packages ; \
+	    fi ; \
 	done
 	dh_auto_install
 	find $(debtmp)/usr -type f -name "*.js" -delete