horn blows when steering column grounds with tool - Normal?

[mole2000]

I got my horn wiring sorted out a few weeks ago and it works great from the steering wheel, but was still working on some other items under the hood when my wrench touched the column while tightening a nut on the inner fender. Of course my head was a foot away from the horn. Yikes! It still works well. Is that normal or should I check for a wiring problem?

Thanks.