--- a/testing/firefox-ui/tests/functional/security/test_safe_browsing_initial_download.py
+++ b/testing/firefox-ui/tests/functional/security/test_safe_browsing_initial_download.py
@@ -43,16 +43,19 @@ class TestSafeBrowsingInitialDownload(Pu
     prefs_safebrowsing = {
         'browser.safebrowsing.debug': True,
         'browser.safebrowsing.blockedURIs.enabled': True,
         'browser.safebrowsing.downloads.enabled': True,
         'browser.safebrowsing.phishing.enabled': True,
         'browser.safebrowsing.malware.enabled': True,
         'privacy.trackingprotection.enabled': True,
         'privacy.trackingprotection.pbmode.enabled': True,
+        'urlclassifier.malwareTable':
+        'goog-malware-shavar,goog-unwanted-shavar,test-malware-simple,test-unwanted-simple',
+        'urlclassifier.phishTable': 'googpub-phish-shavar,test-phish-simple',
     }
 
     def get_safebrowsing_files(self, is_v4):
         files = []
 
         if is_v4:
             my_file_extensions = self.v4_file_extensions
         else:  # v2