Help wanted with hugs error message

I am compiling the following inoffensive source file, dubbed finterp.lhs: '''Interpreter for factors'''

module FactorInterp where import Ast (Sym) import Value () import Factor

result = "*"

exp (Sym s) = Vee [result `eq` Value.Sym s :@: 1.0]

Hugs reports: ERROR "finterp.lhs" (line 10): Definition of variable "exp" clashes with import But there is no explicit `exp' in any of my other modules: : nr@labrador 1337 ; grep -w exp *.lhs finterp.lhs:> exp (Sym s) = Vee [result `eq` Value.Sym s :@: 1.0] Can anyone help me to find an expunge this error? Thanks, Norman