diff --git a/selfdrive/test/fuzzy_generation.py b/selfdrive/test/fuzzy_generation.py
index ca34d8e637..bde9b6efcf 100644
--- a/selfdrive/test/fuzzy_generation.py
+++ b/selfdrive/test/fuzzy_generation.py
@@ -38,7 +38,7 @@ class FuzzyGenerator:
     elif field == 'text':
       return st.text(max_size=1000)
     elif field == 'data':
-      return st.text(max_size=1000)
+      return st.binary(max_size=1000)
     elif field == 'anyPointer':
       return st.text()
     else: