diff --git a/src/mathed/InsetMathColor.cpp b/src/mathed/InsetMathColor.cpp
index be2c0f881a..e3be8ff9bf 100644
--- a/src/mathed/InsetMathColor.cpp
+++ b/src/mathed/InsetMathColor.cpp
@@ -30,7 +30,8 @@ namespace lyx {
 
 InsetMathColor::InsetMathColor(Buffer * buf, bool oldstyle, ColorCode color)
 	: InsetMathNest(buf, 1), oldstyle_(oldstyle),
-	  color_(from_utf8(lcolor.getLaTeXName(color)))
+	  color_(from_utf8(lcolor.getLaTeXName(color))),
+	  current_mode_(UNDECIDED_MODE)
 {}