diff --git a/buildbot/buildbot_steps.sh b/buildbot/buildbot_steps.sh
index 7cdb7ee..d65c29c 100755
--- a/buildbot/buildbot_steps.sh
+++ b/buildbot/buildbot_steps.sh
@@ -84,7 +84,7 @@ function make_ipxe_lkrn() {
     curr="$(pwd)"
     cd "${ipxe_src_dir}/src/" || return 1
 
-    make bin/ipxe.lkrn EMBED="${embed_file}" CERT="$LE_CERT,${signing_cert},${ca_cert}" TRUST="$LE_CERT,${ca_cert}" DEBUG=x509 || return 2
+    make bin/ipxe.lkrn EMBED="${embed_file}" CERT="$LE_CERT,${signing_cert},${ca_cert}" TRUST="$LE_CERT,${ca_cert}" || return 2
 
     cd "$curr"
     return 0
@@ -120,7 +120,7 @@ function make_ipxe_iso() {
     curr="$(pwd)"
     cd "${ipxe_src_dir}/src/" || return 1
 
-    make bin/ipxe.iso EMBED="${embed_file}" CERT="$LE_CERT,${signing_cert},${ca_cert}" TRUST="$LE_CERT,${ca_cert}" DEBUG=x509 || return 2
+    make bin/ipxe.iso EMBED="${embed_file}" CERT="$LE_CERT,${signing_cert},${ca_cert}" TRUST="$LE_CERT,${ca_cert}" || return 2
 
     cd "$curr"
     return 0