diff --git a/Magnetodynamics/electromagnet.pro b/Magnetodynamics/electromagnet.pro
index dd2a5b41047f99ba8f6640684098a7add5e62014..fb2a56f11336c283d8b07d5923ab6e138531b9c8 100644
--- a/Magnetodynamics/electromagnet.pro
+++ b/Magnetodynamics/electromagnet.pro
@@ -61,7 +61,7 @@ Function {
     // of 1; any desired function can be specified
     timeFunction = {"($Time < TimeFinal / 2) ? (2 / TimeFinal * $Time) : 1",
       Choices{"($Time < TimeFinal / 2) ? (2 / TimeFinal * $Time) : 1",
-        "Sin[2*Pi*frequency*$Time]", "Sin[2*Pi*10*$Time]"},
+        "Sin[2 * Pi * Freq * $Time]", "Sin[2 * Pi * 10 * $Time]"},
       Name "Model parameters/04Time function", Visible TimeDomain}
 
     // overwrite parameters from the "Lib_Magnetodynamics2D_av_Cir.pro"