Error in Installing freeTDS module


I have installed FreeTDS sucessfully. When i try to recompile asterisk while executing “make install” command i got the following issue. Please tell me how to resolve it. My asterisk version 1.8.1 and using fedora.

[color=#FF0040]Your Asterisk modules directory, located at
contains modules that were not installed by this
version of Asterisk. Please ensure that these
modules are compatible with this version before
attempting to run Asterisk.[/color]