diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index a27c4d4e20..7e97bedada 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -1755,6 +1755,7 @@ bool InsetMathHull::readQuiet(Lexer & lex)
 
 int InsetMathHull::plaintext(odocstream & os, OutputParams const &) const
 {
+	// disables ASCII-art for export of equations. See #2275.
 	if (0 && display()) {
 		Dimension dim;
 		TextMetricsInfo mi;