diff --git a/src/tex2lyx/math.cpp b/src/tex2lyx/math.cpp
index 44b0f08389..f615926efa 100644
--- a/src/tex2lyx/math.cpp
+++ b/src/tex2lyx/math.cpp
@@ -58,7 +58,7 @@ void parse_math(Parser & p, ostream & os, unsigned flags, const mode_type mode)
 		//
 		if (t.cat() == catMath) {
 			if (mode == MATHTEXT_MODE) {
-				// we are inside some text mode thingy, so opening new math is allowed
+				// we are inside some text mode thing, so opening new math is allowed
 				Token const & n = p.get_token();
 				if (n.cat() == catMath) {
 					// TeX's $$...$$ syntax for displayed math