diff --git a/x/crud/internal/types/msgs.go b/x/crud/internal/types/msgs.go
index cdae3ccd..4cf690dc 100644
--- a/x/crud/internal/types/msgs.go
+++ b/x/crud/internal/types/msgs.go
@@ -133,9 +133,15 @@ func (msg MsgBLZUpdate) ValidateBasic() sdk.Error {
 	if msg.Owner.Empty() {
 		return sdk.ErrInvalidAddress(msg.Owner.String())
 	}
+
 	if len(msg.UUID) == 0 || len(msg.Key) == 0 {
 		return sdk.ErrInvalidPubKey("UUID or key Empty")
 	}
+
+	if len(msg.Value) > MaxValueSize {
+		return sdk.ErrInternal("Value too large")
+	}
+
 	return nil
 }
 
diff --git a/x/crud/internal/types/msgs_test.go b/x/crud/internal/types/msgs_test.go
index d17a4b71..1b133f11 100644
--- a/x/crud/internal/types/msgs_test.go
+++ b/x/crud/internal/types/msgs_test.go
@@ -64,7 +64,7 @@ func TestMsgBLZCreate_ValidateBasic(t *testing.T) {
 	sut.Key = "Key"
 	sut.UUID = "UUID"
 	sut.Value = string(make([]byte, MaxValueSize+1))
-	assert.Equal(t, sut.ValidateBasic(), sdk.ErrInternal("Value too large"))
+	assert.Equal(t, sdk.ErrInternal("Value too large"), sut.ValidateBasic())
 }
 
 func TestMsgBLZCreate_GetSignBytes(t *testing.T) {
@@ -160,6 +160,11 @@ func TestMsgBLZUpdate_ValidateBasic(t *testing.T) {
 	sut.UUID = "uuid"
 	sut.Key = ""
 	assert.Equal(t, sut.ValidateBasic(), sdk.ErrInvalidPubKey("UUID or key Empty"))
+
+	sut.Key = "Key"
+	sut.UUID = "UUID"
+	sut.Value = string(make([]byte, MaxValueSize+1))
+	assert.Equal(t, sdk.ErrInternal("Value too large"), sut.ValidateBasic())
 }
 
 func TestMsgBLZUpdate_GetSignBytes(t *testing.T) {