diff --git a/terminatorlib/terminator.py b/terminatorlib/terminator.py
index a728c0a2..4ad0055b 100755
--- a/terminatorlib/terminator.py
+++ b/terminatorlib/terminator.py
@@ -458,8 +458,9 @@ class Terminator(Borg):
                     break
 
         # Size the GtkPaned splitter handle size.
+        css = ""
         if self.config['handle_size'] in xrange(0, 21):
-            css = """
+            css += """
                 .terminator-terminal-window GtkPaned {
                     -GtkPaned-handle-size: %s; }
                 """ % self.config['handle_size']