diff --git a/src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs b/src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs
index 900302a3fa9517..424ec3e7caeb91 100644
--- a/src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs
+++ b/src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs
@@ -822,7 +822,10 @@ public async Task SendPingWithLowTtl_RoundtripTimeIsNonZero()
 
             // RTT can legitimately be 0ms on very fast networks, so retry a few times
             // and assert that at least one reply reports a non-zero RTT.
-            options.Ttl = 1;
+            // Use TTL=5 instead of 1 to increase the chance of a measurable (>0ms) round-trip
+            // time. On macOS, the raw socket implementation truncates sub-millisecond RTT to 0,
+            // and the first-hop router often responds in <1ms.
+            options.Ttl = 5;
             bool gotNonZeroRtt = false;
             for (int attempt = 0; attempt < 3; attempt++)
             {