diff --git a/src/dynamic_graph/sot/dynamics/parser.py b/src/dynamic_graph/sot/dynamics/parser.py
index fd3ffe02a0eeff935ab8b86da607187d75f3d2cf..c4ada0e7e6528f9716e600c8a8944784dc5dd9f8 100644
--- a/src/dynamic_graph/sot/dynamics/parser.py
+++ b/src/dynamic_graph/sot/dynamics/parser.py
@@ -121,6 +121,10 @@ class Parser (object):
         self.entity.setFootParameters(False, soleLength, soleWidth,
                                       anklePosition)
 
+        anklePosition = (anklePosition[0], -anklePosition[1], anklePosition[2])
+        self.entity.setFootParameters(True, soleLength, soleWidth,
+                                      anklePosition)
+
         # Gaze parameters.
         gazeOrigin = (self.GAZEORIGINX, self.GAZEORIGINY, self.GAZEORIGINZ)
         gazeDirection = (self.GAZEDIRECTIONX, self.GAZEDIRECTIONY,