diff --git a/src/dgtk.py b/src/dgtk.py
index 6706ca7db..e97b0935f 100644
--- a/src/dgtk.py
+++ b/src/dgtk.py
@@ -43,7 +43,8 @@ import gtk
 
 def cell_data_speed(column, cell, model, iter, data):
     speed = int(model.get_value(iter, data))
-    speed_str = common.fspeed(speed)
+    if speed<100: speed_str = ""
+    else: speed_str = common.fspeed(speed)
     cell.set_property('text', speed_str)
 
 def cell_data_size(column, cell, model, iter, data):