diff --git a/monai/apps/nnunet/nnunetv2_runner.py b/monai/apps/nnunet/nnunetv2_runner.py
index db00929e71..5d5c82801a 100644
--- a/monai/apps/nnunet/nnunetv2_runner.py
+++ b/monai/apps/nnunet/nnunetv2_runner.py
@@ -596,16 +596,13 @@ def train_single_model_command(
         if self.export_validation_probabilities:
             cmd.append("--npz")
 
-        store_true_flags = {"c", "val", "use_compressed", "disable_checkpointing"}
         for _key, _value in kwargs.items():
-            if _key in store_true_flags:
+            prefix = "-" if _key in {"p", "pretrained_weights"} else "--"
+            if isinstance(_value, bool):
                 if _value:
-                    cmd.append(f"--{_key}")
-            elif _key in {"p", "pretrained_weights"}:
-                if _value:
-                    cmd += [f"-{_key}", str(_value)]
+                    cmd.append(f"{prefix}{_key}")
             else:
-                cmd += [f"--{_key}", str(_value)]
+                cmd += [f"{prefix}{_key}", str(_value)]
 
         cmd_str: list[str] = [str(c) for c in cmd]