diff --git a/utils/loggers/wandb/sweep.py b/utils/loggers/wandb/sweep.py
index 206059bc30bf..d49ea6f2778b 100644
--- a/utils/loggers/wandb/sweep.py
+++ b/utils/loggers/wandb/sweep.py
@@ -16,8 +16,8 @@
 
 def sweep():
     wandb.init()
-    # Get hyp dict from sweep agent
-    hyp_dict = vars(wandb.config).get("_items")
+    # Get hyp dict from sweep agent. Copy because train() modifies parameters which confused wandb.
+    hyp_dict = vars(wandb.config).get("_items").copy()
 
     # Workaround: get necessary opt args
     opt = parse_opt(known=True)