diff --git a/Makefile b/Makefile
deleted file mode 100644
index d28357e..0000000
--- a/Makefile
+++ /dev/null
@@ -1,49 +0,0 @@
-include ${GOROOT}/src/Make.inc
-
-TARG = kakapo
-GOFILES = kakapo.go repl.go packages.go
-PREREQ = lisp
-CLEANFILES = _go_.${O} ${TARG} lisp.a repl.go packages.go
-TXT2GO = ./txt2go.sh
-
-${TARG}: ${GOFILES} ${PREREQ}
-	go build -o kakapo -x
-
-repl.go: repl.lisp
-	${TXT2GO} repl < repl.lisp > $@
-
-packages.go: scanpkgs/scanpkgs
-	scanpkgs/scanpkgs > packages.go
-	gofmt -w packages.go
-
-lisp:
-	cd lisp && go install -x
-
-scanpkgs/scanpkgs: scanpkgs/scanpkgs.${O}
-	${LD} -o $@ scanpkgs/scanpkgs.${O}
-
-scanpkgs/scanpkgs.${O}: scanpkgs/main.go
-	${GC} -o $@ scanpkgs/main.go
-
-clean:
-	rm -f ${CLEANFILES}
-	rm -f scanpkgs/scanpkgs.${O} scanpkgs/scanpkgs
-	cd lisp && go clean
-
-ifeq ($(TARGDIR),)
-TARGDIR:=$(QUOTED_GOBIN)
-endif
-
-install:
-	mkdir -p $(TARGDIR) && cp -f $(TARG) $(TARGDIR)
-
-fmt:
-	gofmt -w kakapo.go
-	make -Clisp fmt
-
-test: ${TARG}
-	make -Clisp test
-	./test.sh
-
-.PHONY: lisp test fmt clean install
-
diff --git a/kakapo.go b/kakapo.go
index b694346..bbcee4e 100644
--- a/kakapo.go
+++ b/kakapo.go
@@ -44,7 +44,7 @@ func main() {
 		return
 	}
 
-	if t.IsTerminal(os.Stdin.Fd()) {
+	if t.IsTerminal(int(os.Stdin.Fd())) {
 		// Start the read-eval-print loop
 		EvalFrom(strings.NewReader(repl))
 	} else {