diff --git a/pesign-test-app.spec b/pesign-test-app.spec
index 6a5b590..527eccc 100644
--- a/pesign-test-app.spec
+++ b/pesign-test-app.spec
@@ -49,7 +49,7 @@ getfacl /run/pesign/socket || :
 
 cp %{name}-unsigned.efi %{name}-unsigned.0.efi
 %pesign -s -i %{name}-unsigned.0.efi -o %{name}-signed.0.efi
-%define pe_signing_cert "/CN=fwupd-signer"
+%define pe_signing_cert fwupd-signer
 cp %{name}-unsigned.efi %{name}-unsigned.1.efi
 %pesign -s -i %{name}-unsigned.1.efi -o %{name}-signed.1.efi -n "/CN=fwupd-signer"