X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2FInsetMathUnknown.h;h=2effe3c69b5cdc0386aa32251d7f8e8c42501789;hb=f5fe3c17be0a66b32085585962877dfc2dae9140;hp=0436be5df636c07054720cb1385e9623a922c14f;hpb=a7f7530bd21d123636868801458cf907903ba235;p=lyx.git

diff --git a/src/mathed/InsetMathUnknown.h b/src/mathed/InsetMathUnknown.h
index 0436be5df6..2effe3c69b 100644
--- a/src/mathed/InsetMathUnknown.h
+++ b/src/mathed/InsetMathUnknown.h
@@ -14,8 +14,6 @@
 
 #include "InsetMath.h"
 
-#include "support/docstring.h"
-
 
 namespace lyx {
 
@@ -24,7 +22,7 @@ class InsetMathUnknown : public InsetMath {
 public:
 	///
 	explicit InsetMathUnknown(docstring const & name,
-		docstring const & selection = docstring(),
+		docstring const & selection = empty_docstring(),
 		bool final = true, bool black = false);
 	///
 	void metrics(MetricsInfo & mi, Dimension & dim) const;