diff --git a/gallery.py b/gallery.py
index 351a717..308b841 100755
--- a/gallery.py
+++ b/gallery.py
@@ -6,7 +6,8 @@ try:
     from PIL import Image
 except ImportError:
     print >>sys.stderr, ("Unable to import PIL.Image; "
-                         "is the Python Imaging Library installed?")
+                         "is the Python Imaging Library installed?"
+						 "\(e.g.: apt-get install python-image\)")
     sys.exit(0)
 
 __version__ = '1.01'