diff --git a/src/lighteval/tasks/lighteval_task.py b/src/lighteval/tasks/lighteval_task.py
index b84d421a6..bc1771ade 100644
--- a/src/lighteval/tasks/lighteval_task.py
+++ b/src/lighteval/tasks/lighteval_task.py
@@ -32,7 +32,7 @@
 
 from lighteval.metrics.metrics import Metrics
 from lighteval.metrics.metrics_sample import SamplingMetric
-from lighteval.metrics.utils.metric_utils import Metric
+from lighteval.metrics.utils.metric_utils import Metric, MetricGrouping
 from lighteval.tasks.prompt_manager import FewShotSampler
 from lighteval.tasks.requests import (
     Doc,
@@ -167,15 +167,8 @@ def __str__(self, lite: bool = False):
                 continue
             if k == "metrics":
                 for ix, metrics in enumerate(v):
-                    for metric_k, metric_v in metrics.items():
-                        if isinstance(metric_v, Callable):
-                            repr_v = metric_v.__name__
-                        elif isinstance(metric_v, Metric.get_allowed_types_for_metrics()):
-                            repr_v = str(metric_v)
-                        else:
-                            repr_v = repr(metric_v)
-                        values.append([f"{k} {ix}: {metric_k}", repr_v])
-
+                    item_str_list = self._build_metrics_item_str_list(ix, metrics)
+                    values.extend(item_str_list)
             else:
                 if isinstance(v, Callable):
                     values.append([k, v.__name__])
@@ -186,6 +179,35 @@ def __str__(self, lite: bool = False):
 
         return md_writer.dumps()
 
+    def _build_metrics_item_str_list(self, ix: int, metrics: dict) -> list:
+        values = []
+
+        is_metric_grouping = False
+
+        if isinstance(getattr(self, "metrics")[ix], MetricGrouping):
+            is_metric_grouping = True
+
+        for metric_k, metric_v in metrics.items():
+            if is_metric_grouping and isinstance(metric_v, dict):
+                for metric_sub_k, metric_sub_v in metric_v.items():
+                    if isinstance(metric_sub_v, Callable):
+                        repr_v = metric_sub_v.__name__
+                    elif isinstance(metric_sub_v, Metric.get_allowed_types_for_metrics()):
+                        repr_v = str(metric_sub_v)
+                    else:
+                        repr_v = repr(metric_sub_v)
+                    values.append([f"metrics {ix}: {metric_k}: {metric_sub_k}", repr_v])
+            else:
+                if isinstance(metric_v, Callable):
+                    repr_v = metric_v.__name__
+                elif isinstance(metric_v, Metric.get_allowed_types_for_metrics()):
+                    repr_v = str(metric_v)
+                else:
+                    repr_v = repr(metric_v)
+                values.append([f"metrics {ix}: {metric_k}", repr_v])
+
+        return values
+
     def print(self, lite: bool = False):
         print(str(self, lite))