diff -r b72591087495 -r a10f553e6f6a pgtoolkit/pgbrowser.py
--- a/pgtoolkit/pgbrowser.py	Tue Dec 10 11:39:57 2013 +0100
+++ b/pgtoolkit/pgbrowser.py	Tue Feb 04 16:10:04 2014 +0100
@@ -127,6 +127,7 @@
         self.mode = mode
         self.default = default
 
+
 class Function:
     def __init__(self, browser, schema, oid, name, function_name, type, result, source):
         self.browser = browser
@@ -416,7 +417,7 @@
             oid: function oid from pg_catalog.pg_proc (returned by list_functions)
 
         """
-        return self._query('''select pg_get_functiondef(%s);''', [oid])
+        return self._query('''SELECT pg_get_functiondef(%s) AS definition;''', [oid])[0]['definition']
 
     def list_types(self, schema='public'):
         """List types in schema.