diff --git a/models/asymkey/gpg_key.go b/models/asymkey/gpg_key.go
index 2b99972379..a12cd20483 100644
--- a/models/asymkey/gpg_key.go
+++ b/models/asymkey/gpg_key.go
@@ -33,7 +33,7 @@ type GPGKey struct {
 	OwnerID           int64              `xorm:"INDEX NOT NULL"`
 	KeyID             string             `xorm:"INDEX CHAR(16) NOT NULL"`
 	PrimaryKeyID      string             `xorm:"CHAR(16)"`
-	Content           string             `xorm:"TEXT NOT NULL"`
+	Content           string             `xorm:"MEDIUMTEXT NOT NULL"`
 	CreatedUnix       timeutil.TimeStamp `xorm:"created"`
 	ExpiredUnix       timeutil.TimeStamp
 	AddedUnix         timeutil.TimeStamp
diff --git a/models/asymkey/ssh_key.go b/models/asymkey/ssh_key.go
index 107a29e985..9f95bb5baf 100644
--- a/models/asymkey/ssh_key.go
+++ b/models/asymkey/ssh_key.go
@@ -41,7 +41,7 @@ type PublicKey struct {
 	OwnerID       int64           `xorm:"INDEX NOT NULL"`
 	Name          string          `xorm:"NOT NULL"`
 	Fingerprint   string          `xorm:"INDEX NOT NULL"`
-	Content       string          `xorm:"TEXT NOT NULL"`
+	Content       string          `xorm:"MEDIUMTEXT NOT NULL"`
 	Mode          perm.AccessMode `xorm:"NOT NULL DEFAULT 2"`
 	Type          KeyType         `xorm:"NOT NULL DEFAULT 1"`
 	LoginSourceID int64           `xorm:"NOT NULL DEFAULT 0"`