diff --git a/gguf-py/gguf/metadata.py b/gguf-py/gguf/metadata.py
index 0cfaf80aa..7d6478189 100644
--- a/gguf-py/gguf/metadata.py
+++ b/gguf-py/gguf/metadata.py
@@ -179,7 +179,7 @@ class Metadata:
         # Heuristic to match against cases such as 'Mixtral-8x7B-Instruct-v0.1' or 'Codestral-22B-v0.1'
         regex_match = re.compile(r'^'
                                  r'(?P<basename>[A-Za-z0-9\s]*(?:(?:-(?:(?:[A-Za-z\s][A-Za-z0-9\s]*)|(?:[0-9\s]*)))*))'
-                                 r'(?:-(?P<size_label>(?:\d+x)?\d+[A-Za-z](?:-[A-Za-z]+(?:\d+x)?\d+[A-Za-z]+)?)(?:-(?P<finetune>[A-Za-z0-9\s-]+))?)?'
+                                 r'(?:-(?P<size_label>(?:\d+x)?(\d+\.)?\d+[A-Za-z](?:-[A-Za-z]+(\d+\.)?\d+[A-Za-z]+)?)(?:-(?P<finetune>[A-Za-z0-9\s-]+))?)?'
                                  r'(?:-(?P<version>v\d+(?:\.\d+)*))?'
                                  r'$').match(model_full_name_component)
 
diff --git a/gguf-py/tests/test_metadata.py b/gguf-py/tests/test_metadata.py
index 340b1b493..2c25e85d4 100755
--- a/gguf-py/tests/test_metadata.py
+++ b/gguf-py/tests/test_metadata.py
@@ -73,6 +73,10 @@ class TestMetadataMethod(unittest.TestCase):
         self.assertEqual(gguf.Metadata.get_model_id_components("crestf411/daybreak-kunoichi-2dpo-7b"),
                          ('daybreak-kunoichi-2dpo-7b', 'crestf411', None, None, None, None))
 
+        # This is a real model id where the weight size has a decimal point
+        self.assertEqual(gguf.Metadata.get_model_id_components("Qwen2-0.5B-Instruct"),
+                         ('Qwen2-0.5B-Instruct', None, 'Qwen2', 'Instruct', None, '0.5B'))
+
     def test_apply_metadata_heuristic_from_model_card(self):
         model_card = {
             'tags': ['Llama-3', 'instruct', 'finetune', 'chatml', 'DPO', 'RLHF', 'gpt4', 'synthetic data', 'distillation', 'function calling', 'json mode', 'axolotl'],