diff --git a/source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/RenameStateDialog.cpp b/source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/RenameStateDialog.cpp
index 0366eb4a19c946138b55773bb13a4cda3ee630bb..4f0ac580d78a173ca719421cc34c007e801f2bef 100644
--- a/source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/RenameStateDialog.cpp
+++ b/source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/RenameStateDialog.cpp
@@ -67,13 +67,13 @@ namespace armarx
 
         localStates = sourceGroup->getAllStates(true);
 
-        for (const StatechartGroupPtr & group : treeModel->getGroups())
+        for (const StatechartGroupPtr& group : treeModel->getGroups())
         {
             if (group->getWriteAccess() == StatechartGroup::eReadOnly)
             {
                 continue;
             }
-            for (const StateTreeNodePtr & node : group->getAllNodes())
+            for (const StateTreeNodePtr& node : group->getAllNodes())
             {
                 if (!node->isState() || !node->getState())
                 {
@@ -82,7 +82,7 @@ namespace armarx
 
                 auto state = node->getState();
 
-                for (const statechartmodel::StateInstancePtr & instance : state->getSubstates())
+                for (const statechartmodel::StateInstancePtr& instance : state->getSubstates())
                 {
                     if (!instance->getStateClass())
                     {
@@ -120,7 +120,7 @@ namespace armarx
 
         int i = 0;
 
-        for (const auto & info : instanceRenameInfos)
+        for (const auto& info : instanceRenameInfos)
         {
             QTableWidgetItem* groupItem = new QTableWidgetItem(info.group->getName());
             groupItem->setFlags(groupItem->flags() ^ Qt::ItemIsEditable);
@@ -250,7 +250,7 @@ namespace armarx
     {
         bool inUse = false;
 
-        for (const auto & s : localStates)
+        for (const auto& s : localStates)
         {
             if (newName == s->getStateName())
             {
@@ -272,7 +272,7 @@ namespace armarx
             colorToUse = colorGreen;
         }
 
-        validNewName = !inUse && !newName.size() == 0;
+        validNewName = (!inUse && newName.size() != 0);
         setOkButtonsEnabled(validNewName && validInstanceNames);
 
         QPalette p(ui->labelNewNameError->palette());