diff --git a/src/libslic3r/Extruder.cpp b/src/libslic3r/Extruder.cpp
index 38eff5f14..23584e081 100644
--- a/src/libslic3r/Extruder.cpp
+++ b/src/libslic3r/Extruder.cpp
@@ -179,12 +179,12 @@ double Extruder::retract_restart_extra() const
 
 double Extruder::retract_length_toolchange() const
 {
-    return m_config->retract_length_toolchange.get_at(m_id);
+    return m_config->retract_length_toolchange.get_at(extruder_id());
 }
 
 double Extruder::retract_restart_extra_toolchange() const
 {
-    return m_config->retract_restart_extra_toolchange.get_at(m_id);
+    return m_config->retract_restart_extra_toolchange.get_at(extruder_id());
 }
 
 }