diff --git a/src/test/java/org/orekit/gnss/metric/ntrip/NtripClientTest.java b/src/test/java/org/orekit/gnss/metric/ntrip/NtripClientTest.java
index b07c6346e0a501f33d83dedccd489fd481e75238..342024fd21674b792958aaed28c4cf69e8325d27 100644
--- a/src/test/java/org/orekit/gnss/metric/ntrip/NtripClientTest.java
+++ b/src/test/java/org/orekit/gnss/metric/ntrip/NtripClientTest.java
@@ -161,7 +161,7 @@ public class NtripClientTest {
         client.addObserver(1042, "RTCM3EPH01", new LoggingObserver());
         client.startStreaming("RTCM3EPH01", Type.RTCM, false, false);
         try {
-            Thread.sleep(400);
+            Thread.sleep(1000);
         } catch (InterruptedException ie) {
             // ignored
         }