diff --git a/twd_solver.py b/twd_solver.py
index 810b7fd05a91768f85c81328220bd2621b2bc24d..a8aad0eb323888a0d229c30abd59f5caafdde136 100644
--- a/twd_solver.py
+++ b/twd_solver.py
@@ -32,7 +32,7 @@ def solve(params):
 
     problem = params['problem']
     timeout = params['timeout']
-    seed = params.get('seed', int(time.time))
+    seed = params.get('seed', int(time.time()))
 
     basedir = os.path.abspath(os.path.dirname(__file__))