diff --git a/python-zmq.spec b/python-zmq.spec
index 3d587ac..5cbdc04 100644
--- a/python-zmq.spec
+++ b/python-zmq.spec
@@ -9,7 +9,6 @@ Source0:        %{pypi_source pyzmq}
 
 BuildRequires:  gcc
 BuildRequires:  chrpath
-BuildRequires:  %{_bindir}/pathfix.py
 
 BuildRequires:  zeromq-devel
 
@@ -59,38 +58,31 @@ This package contains the test suite for the Python bindings.
 
 
 %prep
-%setup -q -n pyzmq-%{version}
+%autosetup -n pyzmq-%{version}
 
 # remove bundled libraries
-rm -rf bundled
+rm -rv bundled
 
 # forcibly regenerate the Cython-generated .c files:
-find zmq -name "*.c" -delete
-%{__python3} setup.py cython
+find zmq -name '*.c' -delete
 
-# remove shebangs
-for lib in zmq/eventloop/*.py; do
-    sed '/\/usr\/bin\/env/d' $lib > $lib.new &&
-    touch -r $lib $lib.new &&
-    mv $lib.new $lib
-done
-
-# remove excecutable bits
-chmod -x examples/pubsub/topics_pub.py
-chmod -x examples/pubsub/topics_sub.py
-
-# delete hidden files
-#find examples -name '.*' | xargs rm -v
+# Remove useless shebangs in files that will be installed without executable
+# permission. The pattern of selecting files before modifying them with sed
+# keeps us from unnecessarily discarding the original mtimes on unmodified
+# files.
+find zmq -type f -name '*.py' \
+    -exec gawk '/^#!/ { print FILENAME }; { nextfile }' '{}' '+' |
+  xargs -r sed -r -i '1{/^#!/d}'
 
 
 %build
+%{python3} setup.py cython
 %py3_build
 
 
 %install
 %global RPATH /zmq/{backend/cython,devices}
 %py3_install
-pathfix.py -pn -i %{__python3} %{buildroot}%{python3_sitearch}
 
 
 %check