bedroom floor issue

[johnwt]

ive took it upon myself to replace the old hard wood flooring to find when i had done so the stud wall has been placed on top set between joists.

ive now had to relay the old flooring back down but now im terrified the stud wall could come down.

please give me any advice you can as this is a 1911 mid terrace so not new build.

there hasnt been any sudden movement or anything but im just worried the stud wall was soley supported by the bedroom floor joists.