diff --git a/source/RobotAPI/libraries/skills_gui/skill_details/SkillDetailsTreeWidget.cpp b/source/RobotAPI/libraries/skills_gui/skill_details/SkillDetailsTreeWidget.cpp
index a9df69ad0505da015072a6dc69818076fba6b086..ad95bf1513553fd344b36ed564f0fbfabc7e6382 100644
--- a/source/RobotAPI/libraries/skills_gui/skill_details/SkillDetailsTreeWidget.cpp
+++ b/source/RobotAPI/libraries/skills_gui/skill_details/SkillDetailsTreeWidget.cpp
@@ -68,7 +68,7 @@ namespace armarx::skills::gui
             this, skillsArgumentsTreeWidgetItem, aron_args, default_args_of_profile);
 
 
-        skillsArgumentsTreeWidgetItem->setExpanded(true);
+        this->expandAll();
 
         // update the ShownSkill
         shownSkill = {skillId, descr};