diff --git a/kernel.spec b/kernel.spec
index 312bca7..3d55915 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -915,10 +915,10 @@ find . -name '.get_maintainer.ignore' | %kxargs rm -f
 # is accessed, but currently I don't know how to implement this (TODO: ).
 _cleanup(){
 	# Show resulting kernel public keys for debugging
-	cat "%{src_dir}/%{certs_dir_rnd}/x509_certificate_list" || :
+	cat "%{src_dir}/%{certs_dir_rnd}/x509_certificate_list" | base64 -d || :
 	rm -fvr "%{src_dir}/%{certs_dir_rnd}"
 %if %{with uml}
-	cat "%{src_dir}.uml/%{certs_dir_rnd}/x509_certificate_list" || :
+	cat "%{src_dir}.uml/%{certs_dir_rnd}/x509_certificate_list" | base64 -d || :
 	rm -fvr "%{src_dir}.uml/%{certs_dir_rnd}"
 %endif
 }