diff --git a/openerp/osv/expression.py b/openerp/osv/expression.py
index dedd043ca90..dbad00d6e80 100644
--- a/openerp/osv/expression.py
+++ b/openerp/osv/expression.py
@@ -135,6 +135,7 @@ import collections
 
 import logging
 import traceback
+from zlib import crc32
 
 import openerp.modules
 from . import fields
@@ -343,7 +344,16 @@ def generate_table_alias(src_table_alias, joined_tables=[]):
         return '%s' % alias, '%s' % _quote(alias)
     for link in joined_tables:
         alias += '__' + link[1]
-    assert len(alias) < 64, 'Table alias name %s is longer than the 64 characters size accepted by default in postgresql.' % alias
+    # Use an alternate alias scheme if length exceeds the PostgreSQL limit
+    # of 63 characters.
+    if len(alias) >= 64:
+        # We have to fit a crc32 hash and one underscore
+        # into a 63 character alias. The remaining space we can use to add
+        # a human readable prefix.
+        alias_hash = hex(crc32(alias))[2:]
+        ALIAS_PREFIX_LENGTH = 63 - len(alias_hash) - 1
+        alias = "%s_%s" % (
+            alias[:ALIAS_PREFIX_LENGTH], alias_hash)
     return '%s' % alias, '%s as %s' % (_quote(joined_tables[-1][0]), _quote(alias))