diff --git a/src/mathed/formulabase.C b/src/mathed/formulabase.C
index a4a1299835..2a06ceb9a9 100644
--- a/src/mathed/formulabase.C
+++ b/src/mathed/formulabase.C
@@ -40,7 +40,6 @@
 #include "font.h"
 #include "math_arrayinset.h"
 #include "math_spaceinset.h"
-#include "math_scopeinset.h"
 #include "math_macrotable.h"
 #include "math_factory.h"
 #include "support/lyxlib.h"