diff --git a/gnes/helper.py b/gnes/helper.py
index 9c3955d2..d4df0a67 100644
--- a/gnes/helper.py
+++ b/gnes/helper.py
@@ -586,12 +586,12 @@ def _path_import(absolute_path):
         return module, spec
 
 
-def make_route_table(routes, exclude_frontend: bool = False):
+def make_route_table(routes, exclude_frontend: bool = False, jitter: float = 1e-8):
     route_time = []
     if exclude_frontend:
-        total_duration = get_duration(routes[0].start_time, routes[0].end_time)
+        total_duration = get_duration(routes[0].start_time, routes[0].end_time) + jitter
     else:
-        total_duration = get_duration(routes[0].start_time, routes[-1].end_time)
+        total_duration = get_duration(routes[0].start_time, routes[-1].end_time) + jitter
     sum_duration = 0
     for k in routes[(1 if exclude_frontend else 0):]:
         d = get_duration(k.start_time, k.end_time)