diff --git a/src/HelperFunctions.py b/src/HelperFunctions.py
index 13a545ace17d8ff52e075fc23d97e8995a08d0ad..123d5a8f8da6385ef24620e4bcd011ae8f6ae25a 100644
--- a/src/HelperFunctions.py
+++ b/src/HelperFunctions.py
@@ -63,7 +63,7 @@ def RunCellProblem(alpha,beta,theta,gamma,mu1,rho1, InputFilePath = os.path.dirn
 
 
 
-def GetCellOutput((alpha,beta,theta,gamma,mu1,rho1, InputFilePath = os.path.dirname(os.getcwd()) +"/inputs/computeMuGamma.parset",
+def GetCellOutput(alpha,beta,theta,gamma,mu1,rho1, InputFilePath = os.path.dirname(os.getcwd()) +"/inputs/computeMuGamma.parset",
                 OutputFilePath = os.path.dirname(os.getcwd()) + "/outputs/outputMuGamma.txt" ):
         RunCellProblem(alpha,beta,theta,gamma,mu1,rho1, InputFilePath)
         print('Read effective quantities...')