[Q] Messages in Call logs topic

I have recently bought Galaxy S5 and have Lollipop. I don't know if its the phone or the software that is causing the trouble.
Basically when i go to call logs, it also gives me log of text messages which is fine by me, but the problem is you can actually see what was written on the text. Is there a way to disable that feature, i don't mind mind having a log of text messages but to display the text that is annoying.

Anyone knows how to disable that?