diff --git a/pp_params.yml b/pp_params.yml
index e545c2c..14d4a69 100644
--- a/pp_params.yml
+++ b/pp_params.yml
@@ -43,7 +43,7 @@ pymses: # Parameters for Pymses reader
 
     # Source settings
     variables :  ["rho","vel","Br","Bl","P", "g", "phi"]  # Read these grid variables
-    part_variables :  ["vel","mass","id","level","epoch", "metal"]  # Read these particles variables
+    part_variables :  ["vel","mass","id","level","epoch"]  # Read these particles variables
     order     : '<'                                       # Bit order