diff --git a/src/mathed/mathparser_flags.h b/src/mathed/mathparser_flags.h
deleted file mode 100644
index 41d5cd7982..0000000000
--- a/src/mathed/mathparser_flags.h
+++ /dev/null
@@ -1,51 +0,0 @@
-// -*- C++ -*-
-/**
- * \file mathparser_flags.h
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author Enrico Forestieri
- *
- * Full author contact details are available in file CREDITS.
- */
-
-#ifndef MATHPARSER_FLAGS_H
-#define MATHPARSER_FLAGS_H
-
-namespace lyx {
-
-namespace Parse {
-
-enum flags {
-	/// Parse normally.
-	NORMAL = 0x00,
-	/// Start parsing in text mode.
-	TEXTMODE = 0x01,
-	/// Parse verbatim.
-	VERBATIM = 0x02,
-	/// Quiet operation (no warnigs or errors).
-	QUIET = 0x04
-};
-
-
-inline flags operator|(flags const f, flags const g)
-{
-	return static_cast<flags>(int(f) | int(g));
-}
-
-
-inline flags & operator|=(flags & f, flags g)
-{
-	return f = static_cast<flags>(int(f) | int(g));
-}
-
-
-inline flags operator&(flags const f, flags const g)
-{
-	return static_cast<flags>(int(f) & int(g));
-}
-
-} // namespace Parse
-
-} // namespace lyx
-#endif