port LPC1768 demo on LPC1764

I tried a port of the demo CORTEX_LPC1768_IAR on LPC1764, the compiler gives me this error:
”Warning: Stack pointer is setup to incorrect alignment. Stack addr = 0xFFFFFFFF.”
The question…How do I set the stack pointer to correct alignment?

port LPC1768 demo on LPC1764

Sorry for my stupidity … I changed the project settings of the compiler and everything works now