diff --git a/lib/refrepo/valid/homogeneity.rb b/lib/refrepo/valid/homogeneity.rb
index 3758f4c0eea25f674c4650d999a03fd1046ff197..921050764ec74bbbe55e86d26c8050fd687740a2 100644
--- a/lib/refrepo/valid/homogeneity.rb
+++ b/lib/refrepo/valid/homogeneity.rb
@@ -34,6 +34,10 @@ def global_ignore_keys
     ~pdu[1]
     ~pdu[2]
     ~pdu[3]
+    ~pdu[4]
+    ~pdu[5]
+    ~pdu[6]
+    ~pdu[7]
 
     ~supported_job_types.max_walltime