diff --git a/include/simulink_math_fcn.lusi b/include/simulink_math_fcn.lusi
index 46679d2ecbca43fdc7fe0061c9bb85e65251a226..c54b238d12c8c469c8fe11ff3cc2c061fe3452ca 100644
--- a/include/simulink_math_fcn.lusi
+++ b/include/simulink_math_fcn.lusi
@@ -1,4 +1,3 @@
-#open <lustrec_math>
 function rem_int (x,y: int) returns (z: int) prototype C;
 function rem_real (x,y: real) returns (z: real) prototype C;
 function mod_int (x,y: int) returns (z: int) prototype C;