Error while building project

[kapitanluffy]

Error while building project test (target: Qt Simulator)
When executing build step 'Make'
Could not find make command: mingw32-make.exe in the build environment
Error while building project test (target: Qt Simulator)
When executing build step 'Make'

Error while building project test (target: Qt Simulator)
When executing build step 'Make'
Could not find make command: mingw32-make.exe in the build environment
Error while building project test (target: Qt Simulator)
When executing build step 'Make'

To copy to clipboard, switch view to plain text mode 

i always hate errors generated from this Qt Creator.. it gets me nowhere imo :|
any help? it was working a while ago