TTimer won't allow existence of TTimer2?

I have my own module directory, htbaa.mod, in which I keep my hand crafted modules.

I've also written a timer module which contains a type called TTimer2. The modules name is timer.mod and resides in htbaa.mod.

However, when I include htbaa.mod/timer.mod I cannot do a call to CreateTimer or create a TTimer object. It gives me this error:

C:/Program Files/BlitzMax/mod/brl.mod/timer.mod/timer.debug.win32.x86.a(timer.bmx.debug.win32.x86.o): multiple definition of `__bb_timer_timer'
Build Error: Failed to link C:/test/test.exe

Any idea what the hell is going on here? My own timer.mod doesn't define a TTimer type, only TTimer2. I use it to get framerate independent movement.