diff --git a/cockpit-starter-kit.spec.in b/cockpit-starter-kit.spec.in
index e7a2c5f..48f5b17 100644
--- a/cockpit-starter-kit.spec.in
+++ b/cockpit-starter-kit.spec.in
@@ -22,6 +22,9 @@ Cockpit Starter Kit Example Module
 %make_install
 appstream-util validate-relax --nonet %{buildroot}/%{_datadir}/metainfo/*
 
+# drop source maps, they are large and just for debugging
+find %{buildroot}%{_datadir}/cockpit/ -name '*.map' | xargs rm --verbose
+
 %files
 %{_datadir}/cockpit/*
 %{_datadir}/metainfo/*