diff --git a/debian/rules b/debian/rules
index 2231d16..5394fc3 100755
--- a/debian/rules
+++ b/debian/rules
@@ -14,3 +14,8 @@
 binary-fixup/$(pkg)::
 	find $(cdbs_curdestdir)/usr/share -type f -name '*.desktop' \
 		-execdir perl -pi -e 's,^\S+\s*=\s*\K\S*(?=/usr/share),,g' '{}' ';'
+
+# Ensure proper hash-bang in Python script (Python Policy 0.9 §3.1)
+binary-fixup/$(pkg)::
+	perl -pi -e 's,^#! ?/usr/bin/(env )?python[[:print:]]*$$,#!/usr/bin/$(strip $(cdbs_curpythonruntime)),' \
+		$(cdbs_curdestdir)/usr/share/sugar/activities/*/setup.py