diff --git a/modules/aggregator/aggregator.schema b/modules/aggregator/aggregator.schema
index edbd8c27a16..ed0c146e9bb 100644
--- a/modules/aggregator/aggregator.schema
+++ b/modules/aggregator/aggregator.schema
@@ -38,7 +38,7 @@ function aggregator_schema() {
       'checked'     => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
       'link'        => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''),
       'description' => array('type' => 'text', 'not null' => TRUE, 'size' => 'big'),
-      'image'       => array('type' => 'text', 'not null' => TRUE, 'size' => 'medium'),
+      'image'       => array('type' => 'text', 'not null' => TRUE, 'size' => 'big'),
       'etag'        => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''),
       'modified'    => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
       'block'       => array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny')
diff --git a/modules/comment/comment.schema b/modules/comment/comment.schema
index 0d57892fdc9..5620aa1e7f5 100644
--- a/modules/comment/comment.schema
+++ b/modules/comment/comment.schema
@@ -16,7 +16,7 @@ function comment_schema() {
       'status'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0, 'size' => 'tiny'),
       'format'    => array('type' => 'int', 'size' => 'small', 'not null' => TRUE, 'default' => 0),
       'thread'    => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE),
-      'users'     => array('type' => 'text', 'not null' => FALSE, 'size' => 'medium'),
+      'users'     => array('type' => 'text', 'not null' => FALSE, 'size' => 'big'),
       'name'      => array('type' => 'varchar', 'length' => 60, 'not null' => FALSE),
       'mail'      => array('type' => 'varchar', 'length' => 64, 'not null' => FALSE),
       'homepage'  => array('type' => 'varchar', 'length' => 255, 'not null' => FALSE)
diff --git a/modules/contact/contact.schema b/modules/contact/contact.schema
index 709559dbaa5..f77f6a27cf3 100644
--- a/modules/contact/contact.schema
+++ b/modules/contact/contact.schema
@@ -6,7 +6,7 @@ function contact_schema() {
     'fields' => array(
       'cid'        => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
       'category'   => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''),
-      'recipients' => array('type' => 'text', 'not null' => TRUE, 'size' => 'medium'),
+      'recipients' => array('type' => 'text', 'not null' => TRUE, 'size' => 'big'),
       'reply'      => array('type' => 'text', 'not null' => TRUE, 'size' => 'big'),
       'weight'     => array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny'),
       'selected'   => array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny')
diff --git a/modules/search/search.schema b/modules/search/search.schema
index 4b0e9dcb7d9..a90e3c6a1db 100644
--- a/modules/search/search.schema
+++ b/modules/search/search.schema
@@ -6,7 +6,7 @@ function search_schema() {
     'fields' => array(
       'sid'  => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
       'type' => array('type' => 'varchar', 'length' => 16, 'not null' => FALSE),
-      'data' => array('type' => 'text', 'not null' => TRUE, 'size' => 'medium')
+      'data' => array('type' => 'text', 'not null' => TRUE, 'size' => 'big')
     ),
     'indexes' => array('sid_type' => array('sid', 'type')),
   );
diff --git a/modules/system/system.schema b/modules/system/system.schema
index 544b4f1b2a9..bc1428bb761 100644
--- a/modules/system/system.schema
+++ b/modules/system/system.schema
@@ -7,7 +7,7 @@ function system_schema() {
       'bid'       => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
       'token'     => array('type' => 'varchar', 'length' => 64, 'not null' => TRUE),
       'timestamp' => array('type' => 'int', 'not null' => TRUE),
-      'batch'     => array('type' => 'text', 'not null' => FALSE, 'size' => 'medium')
+      'batch'     => array('type' => 'text', 'not null' => FALSE, 'size' => 'big')
     ),
     'primary key' => array('bid'),
     'indexes' => array('token' => array('token')),
@@ -146,7 +146,7 @@ function system_schema() {
       'hostname'  => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
       'timestamp' => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
       'cache'     => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
-      'session'   => array('type' => 'text', 'not null' => FALSE, 'size' => 'medium')
+      'session'   => array('type' => 'text', 'not null' => FALSE, 'size' => 'big')
     ),
     'primary key' => array('sid'),
     'indexes' => array(
@@ -187,7 +187,7 @@ function system_schema() {
   $schema['variable'] = array(
     'fields' => array(
       'name'     => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
-      'value'    => array('type' => 'text', 'not null' => TRUE, 'size' => 'medium'),
+      'value'    => array('type' => 'text', 'not null' => TRUE, 'size' => 'big'),
     ),
     'primary key' => array('name'),
   );
diff --git a/modules/user/user.schema b/modules/user/user.schema
index 5e18ffa1675..032778f10a8 100644
--- a/modules/user/user.schema
+++ b/modules/user/user.schema
@@ -27,7 +27,7 @@ function user_schema() {
     'fields' => array(
       'pid'  => array('type' => 'serial', 'not null' => TRUE),
       'rid'  => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
-      'perm' => array('type' => 'text', 'not null' => FALSE, 'size' => 'medium'),
+      'perm' => array('type' => 'text', 'not null' => FALSE, 'size' => 'big'),
       'tid'  => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0)
     ),
     'primary key' => array('pid'),
@@ -62,7 +62,7 @@ function user_schema() {
       'language'  => array('type' => 'varchar', 'length' => 12, 'not null' => TRUE, 'default' => ''),
       'picture'   => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => ''),
       'init'      => array('type' => 'varchar', 'length' => 64, 'not null' => FALSE, 'default' => ''),
-      'data'      => array('type' => 'text', 'not null' => FALSE, 'size' => 'medium')
+      'data'      => array('type' => 'text', 'not null' => FALSE, 'size' => 'big')
     ),
     'indexes' => array(
       'access'  => array('access'),