diff --git a/applications/FSIapplication/python_scripts/partitioned_fsi_base_solver.py b/applications/FSIapplication/python_scripts/partitioned_fsi_base_solver.py
index fdf8e3e0960e..7a5f94910cc3 100755
--- a/applications/FSIapplication/python_scripts/partitioned_fsi_base_solver.py
+++ b/applications/FSIapplication/python_scripts/partitioned_fsi_base_solver.py
@@ -22,11 +22,11 @@
 import KratosMultiphysics.FluidDynamicsApplication as KratosFluid
 import KratosMultiphysics.StructuralMechanicsApplication as KratosStructural
 
-def CreateSolver(structure_main_model_part, fluid_main_model_part, project_parameters):
-    return PartitionedFSIBaseSolver(structure_main_model_part, fluid_main_model_part, project_parameters)
+def CreateSolver(fluid_main_model_part, project_parameters):
+    return PartitionedFSIBaseSolver(fluid_main_model_part, project_parameters)
 
 class PartitionedFSIBaseSolver:
-    def __init__(self, structure_main_model_part, fluid_main_model_part, project_parameters):
+    def __init__(self, fluid_main_model_part, project_parameters):
 
         print("** Calling the partitioned FSI base solver constructor...")
 
@@ -41,7 +41,6 @@ def __init__(self, structure_main_model_part, fluid_main_model_part, project_par
         if end_time_structure != end_time_fluid:
             raise("ERROR: Different final time among subdomains!")
 
-        self.structure_main_model_part = structure_main_model_part
         self.fluid_main_model_part = fluid_main_model_part
 
         # Time stepping checks (no sub-stepping between subdomains has been implemented yed)
diff --git a/applications/FSIapplication/python_scripts/partitioned_fsi_dirichlet_neumann_solver.py b/applications/FSIapplication/python_scripts/partitioned_fsi_dirichlet_neumann_solver.py
index e7045dffcdcd..ef5277260d7c 100755
--- a/applications/FSIapplication/python_scripts/partitioned_fsi_dirichlet_neumann_solver.py
+++ b/applications/FSIapplication/python_scripts/partitioned_fsi_dirichlet_neumann_solver.py
@@ -26,14 +26,14 @@
 # Import base class file
 import partitioned_fsi_base_solver
 
-def CreateSolver(structure_main_model_part, fluid_main_model_part, project_parameters):
-    return PartitionedFSIDirichletNeumannSolver(structure_main_model_part, fluid_main_model_part, project_parameters)
+def CreateSolver(fluid_main_model_part, project_parameters):
+    return PartitionedFSIDirichletNeumannSolver(fluid_main_model_part, project_parameters)
 
 class PartitionedFSIDirichletNeumannSolver(partitioned_fsi_base_solver.PartitionedFSIBaseSolver):
-    def __init__(self, structure_main_model_part, fluid_main_model_part, project_parameters):
+    def __init__(self, fluid_main_model_part, project_parameters):
 
         print("*** Partitioned Dirichlet-Neumann FSI solver construction starts...")
-        super(PartitionedFSIDirichletNeumannSolver, self).__init__(structure_main_model_part, fluid_main_model_part, project_parameters)
+        super(PartitionedFSIDirichletNeumannSolver, self).__init__(fluid_main_model_part, project_parameters)
         print("*** Partitioned Dirichlet-Neumann FSI solver construction finished.")