diff --git a/paddlespeech/t2s/frontend/zh_normalization/chronology.py b/paddlespeech/t2s/frontend/zh_normalization/chronology.py
index ea4558e2a..c130c679e 100644
--- a/paddlespeech/t2s/frontend/zh_normalization/chronology.py
+++ b/paddlespeech/t2s/frontend/zh_normalization/chronology.py
@@ -74,7 +74,7 @@ def replace_time(match) -> str:
         result += "至"
         result += f"{num2str(hour_2)}点"
         if minute_2.lstrip('0'):
-            if int(minute) == 30:
+            if int(minute_2) == 30:
                 result += "半"
             else:
                 result += f"{_time_num2str(minute_2)}分"
diff --git a/tests/unit/t2s/test_time_range.py b/tests/unit/t2s/test_time_range.py
new file mode 100644
index 000000000..e29c4aa95
--- /dev/null
+++ b/tests/unit/t2s/test_time_range.py
@@ -0,0 +1,43 @@
+import importlib.util
+import sys
+import types
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[3]
+NORM = ROOT / "paddlespeech" / "t2s" / "frontend" / "zh_normalization"
+
+
+def load_chronology():
+    pkg_name = "ps_zh_norm_under_test"
+    pkg = types.ModuleType(pkg_name)
+    pkg.__path__ = [str(NORM)]
+    sys.modules[pkg_name] = pkg
+
+    def load(name, filename):
+        spec = importlib.util.spec_from_file_location(
+            name, NORM / filename)
+        module = importlib.util.module_from_spec(spec)
+        sys.modules[name] = module
+        spec.loader.exec_module(module)
+        return module
+
+    load(pkg_name + ".num", "num.py")
+    return load(pkg_name + ".chronology", "chronology.py")
+
+
+def spoken(text):
+    chronology = load_chronology()
+    match = chronology.RE_TIME_RANGE.fullmatch(text)
+    if match is None:
+        match = chronology.RE_TIME.fullmatch(text)
+    return chronology.replace_time(match)
+
+
+def test_range_end_uses_its_own_minutes():
+    assert spoken("8:30-9:15") == "八点半至九点十五分"
+    assert spoken("8:30-9:45") == "八点半至九点四十五分"
+    assert spoken("8:30~9:15") == "八点半至九点十五分"
+    assert spoken("8:15-9:30") == "八点十五分至九点半"
+    assert spoken("8:30-9:30") == "八点半至九点半"
+    assert spoken("9:30") == "九点半"
+    assert spoken("9:15") == "九点十五分"