diff --git a/test.py b/test.py
index abe6b5f37..fb5fda6e1 100755
--- a/test.py
+++ b/test.py
@@ -63,6 +63,7 @@ core_kinds = ["bvt", "core", "system", "unit"]
 #
 core_valgrind_skip_tests = [
     "ns3-tcp-cwnd",
+    "nsc-tcp-loss",
     "ns3-tcp-interoperability",
 ]