diff --git a/openerp/addons/base/res/ir_property.py b/openerp/addons/base/res/ir_property.py
index b90d18233a3..2fdb3870905 100644
--- a/openerp/addons/base/res/ir_property.py
+++ b/openerp/addons/base/res/ir_property.py
@@ -293,13 +293,13 @@ class ir_property(osv.osv):
             elif value <= 0 and operator == '>=':
                 operator = '<'
                 include_zero = True
-            elif value <= 0 and operator == '>':
+            elif value < 0 and operator == '>':
                 operator = '<='
                 include_zero = True
             elif value >= 0 and operator == '<=':
                 operator = '>'
                 include_zero = True
-            elif value >= 0 and operator == '<':
+            elif value > 0 and operator == '<':
                 operator = '>='
                 include_zero = True