diff --git a/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/BrowserUser.java b/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/BrowserUser.java
index 74d05b92..0fd0b261 100644
--- a/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/BrowserUser.java
+++ b/openvidu-test-browsers/src/main/java/io/openvidu/test/browsers/BrowserUser.java
@@ -24,6 +24,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
+import org.junit.jupiter.api.Assertions;
 import org.openqa.selenium.Dimension;
 import org.openqa.selenium.JavascriptExecutor;
 import org.openqa.selenium.WebDriver;
@@ -144,6 +145,7 @@ public class BrowserUser {
 	}
 
 	public boolean assertAllElementsHaveTracks(String querySelector, boolean hasAudio, boolean hasVideo) {
+		Assertions.assertTrue(this.waitUntilAllSrcObjectsDefined(querySelector, 5000));
 		String calculateReturnValue = "returnValue && ";
 		if (hasAudio) {
 			calculateReturnValue += "el.srcObject.getAudioTracks().length === 1 && el.srcObject.getAudioTracks()[0].enabled";
@@ -162,6 +164,29 @@ public class BrowserUser {
 		return tracks;
 	}
 
+	private boolean waitUntilAllSrcObjectsDefined(String querySelector, int maxMsWait) {
+		final int sleepInterval = 50;
+		int maxIterations = maxMsWait / sleepInterval;
+		int counter = 0;
+		boolean defined = srcObjectDefined(querySelector);
+		while (!defined && counter < maxIterations) {
+			try {
+				Thread.sleep(sleepInterval);
+			} catch (InterruptedException e) {
+			}
+			defined = srcObjectDefined(querySelector);
+			counter++;
+		}
+		return defined;
+	}
+
+	private boolean srcObjectDefined(String querySelector) {
+		String script = "return ![...document.querySelectorAll('" + querySelector
+				+ "')].some(mediaElement => !mediaElement.srcObject);";
+		boolean defined = (boolean) ((JavascriptExecutor) driver).executeScript(script);
+		return defined;
+	}
+
 	public void changeElementSize(WebElement videoElement, Integer newWidthInPixels, Integer newHeightInPixels) {
 		String script = "var htmlelement = document.querySelector('#" + videoElement.getAttribute("id") + "');";
 		if (newWidthInPixels != null) {