diff --git a/scene/gui/code_edit.cpp b/scene/gui/code_edit.cpp
index 98cdd549acc..28dd6af3fe3 100644
--- a/scene/gui/code_edit.cpp
+++ b/scene/gui/code_edit.cpp
@@ -78,10 +78,10 @@ void CodeEdit::_notification(int p_what) {
 			if (line_length_guideline_columns.size() > 0) {
 				const int xmargin_beg = theme_cache.style_normal->get_margin(SIDE_LEFT) + get_total_gutter_width();
 				const int xmargin_end = size.width - theme_cache.style_normal->get_margin(SIDE_RIGHT) - (is_drawing_minimap() ? get_minimap_width() : 0);
-				const float char_size = theme_cache.font->get_char_size('0', theme_cache.font_size).width;
 
 				for (int i = 0; i < line_length_guideline_columns.size(); i++) {
-					const int xoffset = xmargin_beg + char_size * (int)line_length_guideline_columns[i] - get_h_scroll();
+					const int column_pos = theme_cache.font->get_string_size(String("0").repeat((int)line_length_guideline_columns[i]), HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size).x;
+					const int xoffset = xmargin_beg + column_pos - get_h_scroll();
 					if (xoffset > xmargin_beg && xoffset < xmargin_end) {
 						Color guideline_color = (i == 0) ? theme_cache.line_length_guideline_color : theme_cache.line_length_guideline_color * Color(1, 1, 1, 0.5);
 						if (rtl) {