diff --git a/editor/gui/scene_tree_editor.cpp b/editor/gui/scene_tree_editor.cpp
index ddf22c46e6ca..7e2d6c9d1e24 100644
--- a/editor/gui/scene_tree_editor.cpp
+++ b/editor/gui/scene_tree_editor.cpp
@@ -291,7 +291,7 @@ void SceneTreeEditor::_add_nodes(Node *p_node, TreeItem *p_parent) {
 		const PackedStringArray warnings = p_node->get_configuration_warnings();
 		const int num_warnings = warnings.size();
 		if (num_warnings > 0) {
-			String warning_icon;
+			StringName warning_icon;
 			if (num_warnings == 1) {
 				warning_icon = SNAME("NodeWarning");
 			} else if (num_warnings <= 3) {
diff --git a/editor/plugins/control_editor_plugin.cpp b/editor/plugins/control_editor_plugin.cpp
index a3804eff005e..3479d222672a 100644
--- a/editor/plugins/control_editor_plugin.cpp
+++ b/editor/plugins/control_editor_plugin.cpp
@@ -360,9 +360,9 @@ void EditorPropertySizeFlags::setup(const Vector<String> &p_options, bool p_vert
 	}
 
 	Control *gui_base = EditorNode::get_singleton()->get_gui_base();
-	String wide_preset_icon = SNAME("ControlAlignHCenterWide");
-	String begin_preset_icon = SNAME("ControlAlignCenterLeft");
-	String end_preset_icon = SNAME("ControlAlignCenterRight");
+	StringName wide_preset_icon = SNAME("ControlAlignHCenterWide");
+	StringName begin_preset_icon = SNAME("ControlAlignCenterLeft");
+	StringName end_preset_icon = SNAME("ControlAlignCenterRight");
 	if (vertical) {
 		wide_preset_icon = SNAME("ControlAlignVCenterWide");
 		begin_preset_icon = SNAME("ControlAlignCenterTop");