diff --git a/sanic/router.py b/sanic/router.py
index 2581e178..2821b0cc 100644
--- a/sanic/router.py
+++ b/sanic/router.py
@@ -163,7 +163,7 @@ class Router:
             parameters.append(parameter)
 
             # Mark the whole route as unhashable if it has the hash key in it
-            if re.search(r'(^|[^^]){1}/', pattern):
+            if re.search(r'(^|[^^]){0}/', pattern):
                 properties['unhashable'] = True
             # Mark the route as unhashable if it matches the hash key
             elif re.search(r'/', pattern):