diff --git a/nominatim/nominatim.py b/nominatim/nominatim.py
index 6d5e4af0..54d9b208 100755
--- a/nominatim/nominatim.py
+++ b/nominatim/nominatim.py
@@ -100,7 +100,7 @@ class InterpolationRunner(object):
 
 
 class DBConnection(object):
-    """ A signle non-blocking database connection.
+    """ A single non-blocking database connection.
     """
 
     def __init__(self, options):