diff --git a/calc_gate.h b/calc_gate.h
index ad6eb95..1b91a08 100644
--- a/calc_gate.h
+++ b/calc_gate.h
@@ -15,6 +15,4 @@ struct param_gate{
 int Calculation_of_InstantaneousFlow(double *value,struct param_gate *param);
 
 
-#ifndef
-
 #endif