diff --git a/prometheus_client/parser.py b/prometheus_client/parser.py
index 9115659b..fe9db1c0 100644
--- a/prometheus_client/parser.py
+++ b/prometheus_client/parser.py
@@ -195,7 +195,7 @@ def build_metric(name, documentation, typ, samples):
                 allowed_names = {
                     'counter': [''],
                     'gauge': [''],
-                    'summary': ['_count', '_sum', ''],
+                    'summary': ['_count', '_sum', '_max', ''],
                     'histogram': ['_count', '_sum', '_bucket'],
                 }.get(typ, [''])
                 allowed_names = [name + n for n in allowed_names]
diff --git a/tests/test_parser.py b/tests/test_parser.py
index 0a340e07..7070bac3 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -207,6 +207,7 @@ def test_roundtrip(self):
 go_gc_duration_seconds{quantile="1"} 0.021383540000000003
 go_gc_duration_seconds_sum 56.12904785
 go_gc_duration_seconds_count 7476.0
+go_gc_duration_seconds_max 0.0
 # HELP go_goroutines Number of goroutines that currently exist.
 # TYPE go_goroutines gauge
 go_goroutines 166.0