diff --git a/wortschlucker/src/wortschlucker.py b/wortschlucker/src/wortschlucker.py
index 96591f1..b405612 100755
--- a/wortschlucker/src/wortschlucker.py
+++ b/wortschlucker/src/wortschlucker.py
@@ -37,8 +37,8 @@ POLL_SETTINGS = {
 }
 
 class ContentSubmission(sqlobject.SQLObject):
-    submitter = sqlobject.StringCol()
-    content = sqlobject.StringCol()
+    submitter = sqlobject.UnicodeCol()
+    content = sqlobject.UnicodeCol()
     poll_id = sqlobject.ForeignKey("Poll")
     timestamp_creation = sqlobject.DateTimeCol()
 
@@ -60,16 +60,16 @@ class ContentSubmission(sqlobject.SQLObject):
 
 class PollSetting(sqlobject.SQLObject):
     poll_id = sqlobject.ForeignKey("Poll")
-    key = sqlobject.StringCol()
-    value = sqlobject.StringCol()
+    key = sqlobject.UnicodeCol()
+    value = sqlobject.UnicodeCol()
 
 
 class Poll(sqlobject.SQLObject):
-    author = sqlobject.StringCol()
+    author = sqlobject.UnicodeCol()
     hash_key = sqlobject.StringCol()
     admin_hash_key = sqlobject.StringCol()
-    title = sqlobject.StringCol()
-    description = sqlobject.StringCol()
+    title = sqlobject.UnicodeCol()
+    description = sqlobject.UnicodeCol()
     timestamp_creation = sqlobject.DateTimeCol()
 
     def get_settings(self):