1 files changed, 5 insertions, 2 deletions
diff --git a/Bugzilla/Util.pm b/Bugzilla/Util.pm
index bfe630a8f..f5ab51d2b 100644
--- a/Bugzilla/Util.pm
+++ b/Bugzilla/Util.pm
@@ -592,8 +592,11 @@ sub is_7bit_clean {
 }
 
 sub clean_text {
-    my ($dtext) = shift;
-    $dtext =~  s/[\x00-\x1F\x7F]+/ /g;   # change control characters into a space
+    my $dtext = shift;
+    if ($dtext) {
+        # change control characters into a space
+        $dtext =~ s/[\x00-\x1F\x7F]+/ /g;
+    }
     return trim($dtext);
 }