diff --git a/android/uhabits-core/src/main/resources/migrations/23.sql b/android/uhabits-core/src/main/resources/migrations/23.sql
index 0afc69fe..1592c4e4 100644
--- a/android/uhabits-core/src/main/resources/migrations/23.sql
+++ b/android/uhabits-core/src/main/resources/migrations/23.sql
@@ -2,4 +2,4 @@ alter table Habits add column question text;
 
 update Habits set question = description;
 
-update Habits set description = null;
\ No newline at end of file
+update Habits set description = "";
\ No newline at end of file