diff --git a/mozilla/tools/tinderbox/build-seamonkey-util.pl b/mozilla/tools/tinderbox/build-seamonkey-util.pl
index 5ba4242d277..1d80cbd35c2 100644
--- a/mozilla/tools/tinderbox/build-seamonkey-util.pl
+++ b/mozilla/tools/tinderbox/build-seamonkey-util.pl
@@ -24,7 +24,7 @@ use Config;         # for $Config{sig_name} and $Config{sig_num}
 use File::Find ();
 use File::Copy;
 
-$::UtilsVersion = '$Revision: 1.356 $ ';
+$::UtilsVersion = '$Revision: 1.357 $ ';
 
 package TinderUtils;
 
@@ -2130,6 +2130,12 @@ sub run_all_tests {
                 set_pref($pref_file, 'dom.disable_open_during_load', 'false');
             }
 
+            if ($Settings::BinaryName =~ /^seamonkey/ ||
+                $Settings::BinaryName =~ /^thunderbird/) {
+                # Suppress seamonkey's palm sync conduit installer
+                set_pref($pref_file, 'extensions.palmsync.conduitRegistered', 'true');
+            }
+
             # Suppress security warnings for QA test.
             if ($Settings::QATest) {
                 set_pref($pref_file, 'security.warn_submit_insecure', 'true');