How can I resolve the issue - including arm_math.h makes systick function unavailable?

I tried to use FFT functions in a project and included the header file required for CMSIS library, arm_math.h.

But I found one issue.

Including “arm_math.h” in a project disables systick function which is used as timer event implementing source for the project.

#define __CMSIS_GENERIC         /* disable NVIC and Systick functions */

If this is removed, any of CMSIS library functions becomes unavailable.

What is the reason of disabling Systick function?

Is there any work-around way on the issue?