diff --git a/helper/exercises.py b/helper/exercises.py
index 2108d11..14fe762 100644
--- a/helper/exercises.py
+++ b/helper/exercises.py
@@ -143,10 +143,12 @@ def build_write_blanks_text_form(form: [], start_id):
 def build_write_blanks_solutions(questions: [], start_id):
     solutions = []
     for i, q in enumerate(questions, start=start_id):
+        solution = [q["possible_answers"]] if isinstance(q["possible_answers"], str) else q["possible_answers"]
+
         solutions.append(
             {
                 "id": str(i),
-                "solution": q["possible_answers"]
+                "solution": solution
             }
         )
     return solutions