diff --git a/tests/testgtkrc b/tests/testgtkrc
index e94ab284b7..d2be67ff06 100644
--- a/tests/testgtkrc
+++ b/tests/testgtkrc
@@ -32,7 +32,9 @@ style "global-style-properties"
   GtkButtonBox::child_min_width = 0
   GtkButtonBox::child_min_height = 0
   GtkArrow::arrow-scaling = 1.0
+  GtkEntry::invisible-char = 10046
 }
+
 class "GtkWidget" style "global-style-properties"
 
 style "defaultfont"