diff --git a/pippin/snana_sim.py b/pippin/snana_sim.py
index 7921b947..3acac0b2 100644
--- a/pippin/snana_sim.py
+++ b/pippin/snana_sim.py
@@ -140,7 +140,7 @@ def __init__(self, name, output_dir, config, global_config, combine="combine.inp
             self.output["types_dict"] = types_dict
             self.output["types"] = sorted_types
 
-            rankeys = [r for r in self.config["GLOBAL"].keys() if r.startswith("RANSEED_")]
+            rankeys = [r for r in self.config.get("GLOBAL", {}).keys() if r.startswith("RANSEED_")]
             value = int(self.config["GLOBAL"][rankeys[0]].split(" ")[0]) if rankeys else 1
             self.set_num_jobs(2 * value)