diff --git a/python-greenlet.spec b/python-greenlet.spec
index 3910971..6a03105 100644
--- a/python-greenlet.spec
+++ b/python-greenlet.spec
@@ -1,6 +1,6 @@
 Name:          python-greenlet
 Version:       1.1.1
-Release:       1mamba
+Release:       2mamba
 Summary:       Lightweight in-process concurrent programming
 Group:         System/Libraries
 Vendor:        openmamba
@@ -34,7 +34,7 @@ CFLAGS="%{optflags}" %{__python} setup.py build
 %{__python} setup.py install \
    -O1 --skip-build \
    --root="%{buildroot}" \
-   --install-headers=%{_includedir}/python \
+   --install-headers=%{python_inc}/greenlet \
    --install-lib=%{python_sitearch} \
    --record=%{name}.filelist
 
@@ -46,6 +46,9 @@ sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 %{python_sitearch}/greenlet-%{version}-py*.egg-info/*
 
 %changelog
+* Sat Sep 18 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.1-2mamba
+- install headers in %python_inc
+
 * Sat Aug 07 2021 Automatic Build System <autodist@mambasoft.it> 1.1.1-1mamba
 - automatic version update by autodist