diff --git a/qpid-proton.spec b/qpid-proton.spec
index a2b98cf..37fd05c 100644
--- a/qpid-proton.spec
+++ b/qpid-proton.spec
@@ -232,7 +232,6 @@ standard.
 
 mkdir buildpython3
 cd buildpython3
-python_includes=$(ls -d /usr/include/python3*)
 %cmake \
     -DSYSINSTALL_BINDINGS=ON \
     -DCMAKE_SKIP_RPATH:BOOL=OFF \