1 files changed, 1 insertions, 1 deletions
diff --git a/hpmr.py b/hpmr.py
index c6e4791..27e7848 100755
--- a/hpmr.py
+++ b/hpmr.py
@@ -511,7 +511,7 @@ else:
             )
 
 # Export positions to file for backup
-if !cli_args.packing:
+if not cli_args.packing:
     np.savetxt("positions.temp",geo_triso_compact_packing,delimiter=",")
 
 # Create the TRISO particles