diff --git a/editor/editor_help.cpp b/editor/editor_help.cpp
index 690538f44cd..d2306abfd70 100644
--- a/editor/editor_help.cpp
+++ b/editor/editor_help.cpp
@@ -172,7 +172,9 @@ void EditorHelp::_class_desc_input(const Ref<InputEvent> &p_input) {
 void EditorHelp::_class_desc_resized() {
 	// Add extra horizontal margins for better readability.
 	// The margins increase as the width of the editor help container increases.
-	const int display_margin = MAX(30 * EDSCALE, get_parent_anchorable_rect().size.width - 900 * EDSCALE) * 0.5;
+	Ref<Font> doc_code_font = get_font("doc_source", "EditorFonts");
+	real_t char_width = doc_code_font->get_char_size('x').width;
+	const int display_margin = MAX(30 * EDSCALE, get_parent_anchorable_rect().size.width - char_width * 120 * EDSCALE) * 0.5;
 
 	Ref<StyleBox> class_desc_stylebox = EditorNode::get_singleton()->get_theme_base()->get_stylebox("normal", "RichTextLabel")->duplicate();
 	class_desc_stylebox->set_default_margin(MARGIN_LEFT, display_margin);