diff --git a/plugins/seen.py b/plugins/seen.py
index 788d2e4..323aab6 100644
--- a/plugins/seen.py
+++ b/plugins/seen.py
@@ -70,7 +70,8 @@ def dbconnect(db):
 
     if(results[0] == 0):
         conn.execute("create table if not exists "+ \
-                     "seen(name varchar(50), date datetime, quote varchar(250), chan varchar(50),"+ \
+                     "seen(name varchar(50) not null, date datetime not null, "+ \
+                     "quote varchar(250) not null, chan varchar(50) not null, "+ \
                      "primary key(name, chan));")
         conn.commit()
 
diff --git a/plugins/tell.py b/plugins/tell.py
index b08bde9..f3bbcb7 100644
--- a/plugins/tell.py
+++ b/plugins/tell.py
@@ -83,8 +83,9 @@ def dbconnect(db):
 
     if results[0] == 0:
         conn.execute("create table if not exists "+ \
-                     "tell(id integer primary key autoincrement, name varchar(50), user_from varchar(50), "+ \
-                     " quote varchar(250), chan varchar(50), date datetime);")
+                     "tell(id integer primary key autoincrement, name varchar(50) not null, "+ \
+                     "user_from varchar(50) not null, quote varchar(250) not null, "+ \
+                     "chan varchar(50) not null, date datetime not null);")
 
         conn.commit()
 
@@ -92,7 +93,7 @@ def dbconnect(db):
     if results[0] == 0:
         conn.execute("create table if not exists "+ \
                      "tell_probation(name varchar(50), chan varchar(50),"+ \
-                     "primary key(name));")
+                     "primary key(name, chan));")
         conn.commit()
 
     return conn