Can't use command+space to change input source I have been having an issue regarding keyboard short-cut to change input source between Japanese and English on a new iMac running on Sierra. On my old Mac, I used &quot;command+space&quot; (Fig. 1) to change the input source, but now on Sierra I have to use &quot;control+space&quot; (Fig. 2), which is quite inconvenient. Could someone help me how to set my system so that I can use &quot;command+space&quot; to change the input source?
You are in the right place, but the wrong selection. 

Select "Spotlight" from the list on the left. You can then uncheck the shortcut for Command Space allowing you to assign that to the shortcut you want to.