diff --git a/fedora-gnat-project-common.spec b/fedora-gnat-project-common.spec
index e4e443b..a9383bd 100644
--- a/fedora-gnat-project-common.spec
+++ b/fedora-gnat-project-common.spec
@@ -1,6 +1,8 @@
+%bcond_without experiment
+
 Name:           fedora-gnat-project-common
 Version:        3.9
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Files shared by Ada libraries
 Summary(sv):    Gemensamma filer för adabibliotek
 
@@ -31,6 +33,14 @@ project files of multiple Ada libraries, and also GNAT-specific RPM macros.
 Paketet fedora-gnat-project-common innehåller filer som används av
 GNAT-projektfilerna för flera adabibliotek, samt GNAT-specifika RPM-makron.
 
+
+%package experiment
+Summary:        Koji experimentation
+
+%description experiment
+I'm experimenting to find out how Koji handles a dropped subpackage.
+
+
 %global _GNAT_project_dir /usr/share/gpr
 # _GNAT_project_dir is defined here and copied from here to macros.gnat so that
 # this package won't build-require itself.
@@ -60,7 +70,16 @@ cp -p macros.gnat %{buildroot}%{RPM_macro_dir}/
 %{RPM_macro_dir}/*
 
 
+%if %{with experiment}
+%files experiment
+%{RPM_macro_dir}/macros.gnat
+%endif
+
+
 %changelog
+* Sat Dec 12 2015 Björn Persson <bjorn@rombobjörn.se> - 3.9-2
+- Rebuilt for experiments with Koji.
+
 * Sun Jul 12 2015 Björn Persson <bjorn@rombobjörn.se> - 3.9-1
 - Upgraded to version 3.9.
 - The architecture ppc64le has been added.