diff --git a/Makefile b/Makefile
index 7ebcba3..5fa1801 100644
--- a/Makefile
+++ b/Makefile
@@ -54,5 +54,5 @@ fmt:
 	@go fmt `go list ./... | grep -v /vendor/`
 
 fumpt:
-	@gofumpt -w *.go
+	@gofumpt -e -w -extra ./
 
diff --git a/gosmee/interface.go b/gosmee/interface.go
index 7ee8357..410e7d6 100644
--- a/gosmee/interface.go
+++ b/gosmee/interface.go
@@ -14,8 +14,10 @@ type GHOp interface {
 	Starting()
 }
 
-var _ GHOp = (*RepoOP)(nil)
-var _ GHOp = (*OrgOP)(nil)
+var (
+	_ GHOp = (*RepoOP)(nil)
+	_ GHOp = (*OrgOP)(nil)
+)
 
 type RepoOP struct {
 	client    *github.Client
diff --git a/tint/buffer.go b/tint/buffer.go
index 4d7321a..178aea7 100644
--- a/tint/buffer.go
+++ b/tint/buffer.go
@@ -23,6 +23,7 @@ func (b *buffer) Free() {
 		bufPool.Put(b)
 	}
 }
+
 func (b *buffer) Write(bytes []byte) (int, error) {
 	*b = append(*b, bytes...)
 	return len(bytes), nil