diff --git a/slate/slate.py b/slate/slate.py
index 5ee69a4..3d10a8a 100644
--- a/slate/slate.py
+++ b/slate/slate.py
@@ -223,7 +223,12 @@ class Slate():
             ) as run:
                 runner(self, run, config)
 
-            assert not REQUIRE_CONFIG_CONSUMED or config == {}, ('Config was not completely consumed: ', config)
+            if config != {}:
+                msg = ('Config was not completely consumed: ', config)
+                if REQUIRE_CONFIG_CONSUMED:
+                    raise Exception(msg)
+                else:
+                    print(msg)
         orig_config = config
 
     def _run_from_sweep(self, orig_config, p_ind):
@@ -240,7 +245,12 @@ class Slate():
             self.deep_update(config, wandb.config)
             runner(self, run, config)
 
-            assert config == {}, ('Config was not completely consumed: ', config)
+            if config != {}:
+                msg = ('Config was not completely consumed: ', config)
+                if REQUIRE_CONFIG_CONSUMED:
+                    raise Exception(msg)
+                else:
+                    print(msg)
         orig_config = config
 
     def from_args(self):