I am getting a strange error when compiling abcpar.f in gfortran

I am getting a strange error when compiling abcpar.f in gfortran:
Compiling .\CHM\VALIEQ\abcpar.f
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
dii.inc:30:10:
Error: 'abcpar' of module 'aaa_modules', imported at (1), is also the name of the current program unit
Error: Last command making (build\abcpar.o) returned a bad status
Error: Make execution terminated
* Failed *
C     aaa_modules.f
C  list of interfaces in a module for CHM / DII code compiling
       MODULE aaa_modules
           implicit none
           INTERFACE
             SUBROUTINE ABCPAR(ISW,IRETST,IR,IC,PAR,IPHASE)
               INTEGER(KIND=8) :: ISW
               INTEGER(KIND=8) :: IRETST
               INTEGER(KIND=8) :: IR
               INTEGER(KIND=8) :: IC
               REAL(KIND=8) :: PAR
               INTEGER(KIND=8) :: IPHASE
             END SUBROUTINE ABCPAR
           END INTERFACE
...
       END MODULE aaa_modules
       SUBROUTINE ABCPAR (ISW, IRETST, IR, IC, PAR, IPHASE)
       INCLUDE 'dii.inc'
...
       return
       end
C  dii.inc
       use aaa_modules
C        force all variables to be declared
       implicit none
Thanks,
Lynn McGuire