diff --git a/cara/apps/calculator/__init__.py b/cara/apps/calculator/__init__.py
index 3a63ad04..e0f7a5f4 100644
--- a/cara/apps/calculator/__init__.py
+++ b/cara/apps/calculator/__init__.py
@@ -21,10 +21,6 @@ class ConcentrationModel(RequestHandler):
 
         try:
             form = model_generator.FormData.from_dict(requested_model_config)
-            model = form.build_model(
-                # TODO: This argument to be removed.
-                tmp_raw_form_data=requested_model_config,
-            )
         except (KeyboardInterrupt, SystemExit):
             raise
         except Exception as err:
@@ -36,7 +32,7 @@ class ConcentrationModel(RequestHandler):
             self.finish(json.dumps(response_json))
             return
 
-        report = build_report(model, form)
+        report = build_report(form.build_model(), form)
         self.finish(report)
 
 
diff --git a/cara/apps/calculator/model_generator.py b/cara/apps/calculator/model_generator.py
index 907a78b2..93ef2dd0 100644
--- a/cara/apps/calculator/model_generator.py
+++ b/cara/apps/calculator/model_generator.py
@@ -107,9 +107,8 @@ class FormData:
             infected_finish=time_string_to_minutes(form_data['infected_finish']),
         )
 
-    # TODO: Remove the tmp_raw_form_data usage.
-    def build_model(self, tmp_raw_form_data) -> Model:
-        return model_from_form(self, tmp_raw_form_data)
+    def build_model(self) -> Model:
+        return model_from_form(self)
 
     def ventilation(self) -> models.Ventilation:
         # Initializes a ventilation instance as a window if 'natural' is selected, or as a HEPA-filter otherwise
@@ -212,9 +211,7 @@ class FormData:
         return models.SpecificInterval(tuple(present_intervals))
 
 
-def model_from_form(form: FormData, tmp_raw_form_data) -> models.Model:
-    d = tmp_raw_form_data
-
+def model_from_form(form: FormData) -> models.Model:
     # Initializes room with volume either given directly or as product of area and height
     if form.volume_type == 'room_volume':
         volume = form.room_volume
@@ -227,7 +224,7 @@ def model_from_form(form: FormData, tmp_raw_form_data) -> models.Model:
 
     # Initializes a mask of type 1 if mask wearing is "continuous", otherwise instantiates the mask attribute as
     # the "No mask"-mask
-    mask = models.Mask.types['Type I' if d['mask_wearing'] == "continuous" else 'No mask']
+    mask = models.Mask.types['Type I' if form.mask_wearing == "continuous" else 'No mask']
 
     # A dictionary containing the mapping of activities listed in the UI to the activity level and expiration level
     # of the infected and exposed occupants respectively.
diff --git a/cara/tests/apps/calculator/test_report_generator.py b/cara/tests/apps/calculator/test_report_generator.py
index f8cedafb..5bb7d719 100644
--- a/cara/tests/apps/calculator/test_report_generator.py
+++ b/cara/tests/apps/calculator/test_report_generator.py
@@ -14,8 +14,8 @@ def baseline_form(baseline_form_data):
     return model_generator.FormData.from_dict(baseline_form_data)
 
 
-def test_generate_report(baseline_form, baseline_form_data):
-    model = baseline_form.build_model(baseline_form_data)
+def test_generate_report(baseline_form):
+    model = baseline_form.build_model()
 
     report = report_generator.build_report(model, baseline_form)
     assert report != ""