diff --git a/scintilla/src/ViewStyle.cxx b/scintilla/src/ViewStyle.cxx
index d190ecf83..9d0ceaed5 100644
--- a/scintilla/src/ViewStyle.cxx
+++ b/scintilla/src/ViewStyle.cxx
@@ -338,6 +338,9 @@ void ViewStyle::Refresh(Surface &surface, int tabInChars) {
 	someStylesForceCase = std::any_of(styles.cbegin(), styles.cend(),
 		[](const Style &style) noexcept { return style.caseForce != Style::CaseForce::mixed; });
 
+	// >>>>>>>>>>>>>>>   BEG NON STD SCI PATCH   >>>>>>>>>>>>>>>
+	spaceWidth = surface.WidthText(styles[STYLE_DEFAULT].font.get(), " ");
+	// <<<<<<<<<<<<<<<   END NON STD SCI PATCH   <<<<<<<<<<<<<<<
 	tabWidth = spaceWidth * tabInChars;
 
 	controlCharWidth = 0.0;