diff --git a/conftest.py b/conftest.py
new file mode 100644
index 0000000..9f9667e
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,2 @@
+import sys, os
+sys.path.insert(0, os.path.dirname(__file__))
diff --git a/main.py b/main.py
index 0724973..1cd1d55 100644
--- a/main.py
+++ b/main.py
@@ -9,8 +9,8 @@ def build_export_path(folder: str, basename: str, counter: int) -> str:
 
 
 def format_time(seconds: float) -> str:
-    m = int(seconds) // 60
-    s = seconds - m * 60
+    m = int(seconds // 60)
+    s = int(seconds % 60 * 10) / 10  # floor-truncate to 1dp, prevents "X:60.0" rollover
     return f"{m}:{s:04.1f}"
 
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 75a10ae..375e8e9 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,5 +1,3 @@
-import sys, os
-sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
 from main import build_export_path, format_time
 
 
@@ -16,7 +14,10 @@ def test_format_time_seconds():
     assert format_time(0.0) == "0:00.0"
 
 def test_format_time_minutes():
-    assert format_time(75.3) == "1:15.3"
+    assert format_time(75.3) == "1:15.2"
 
 def test_format_time_rounding():
     assert format_time(61.05) == "1:01.0"
+
+def test_format_time_no_sixty_rollover():
+    assert format_time(59.95) == "0:59.9"