diff --git a/utils.py b/utils.py
index ce6699a..b9c2432 100644
--- a/utils.py
+++ b/utils.py
@@ -71,14 +71,15 @@ def get_topsets_for_person(person_topsets):
         person_id = sorted_topsets[0]['PersonId']
         exercise_name = sorted_topsets[0]['ExerciseName']
 
-        exercise_progress = get_exercise_graph_model(exercise_name, estimated_1rm, repetitions, weight, start_dates, messages, epoch, person_id, exercise_id)
+        if exercise_name and estimated_1rm and repetitions and weight and start_dates and messages:
+            exercise_progress = get_exercise_graph_model(exercise_name, estimated_1rm, repetitions, weight, start_dates, messages, epoch, person_id, exercise_id)
 
-        exercises_topsets.append({
-            'ExerciseId': exercise_id,
-            'ExerciseName': exercise_name,
-            'Topsets': sorted_topsets,
-            'ExerciseProgressGraph': exercise_progress
-        })
+            exercises_topsets.append({
+                'ExerciseId': exercise_id,
+                'ExerciseName': exercise_name,
+                'Topsets': sorted_topsets,
+                'ExerciseProgressGraph': exercise_progress
+            })
 
     return exercises_topsets