diff --git a/trans/models.py b/trans/models.py
index f7b5cc0d6..1af8e2f3b 100644
--- a/trans/models.py
+++ b/trans/models.py
@@ -409,11 +409,11 @@ class Unit(models.Model):
     translation = models.ForeignKey(Translation)
     checksum = models.CharField(max_length = 40, default = '', blank = True, db_index = True)
     location = models.TextField(default = '', blank = True)
-    context = models.TextField(default = '', blank = True, db_index = True)
+    context = models.TextField(default = '', blank = True)
     comment = models.TextField(default = '', blank = True)
     flags = models.TextField(default = '', blank = True)
-    source = models.TextField(db_index = True)
-    target = models.TextField(default = '', blank = True, db_index = True)
+    source = models.TextField()
+    target = models.TextField(default = '', blank = True)
     fuzzy = models.BooleanField(default = False, db_index = True)
     translated = models.BooleanField(default = False, db_index = True)
     position = models.IntegerField(db_index = True)