diff --git a/example/suffix.enum.gen.go b/example/suffix.enum.gen.go
new file mode 100644
index 0000000..cd739a2
--- /dev/null
+++ b/example/suffix.enum.gen.go
@@ -0,0 +1,46 @@
+// Code generated by go-enum DO NOT EDIT.
+// Version: example
+// Revision: example
+// Build Date: example
+// Built By: example
+
+//go:build example
+// +build example
+
+package example
+
+import (
+	"errors"
+	"fmt"
+)
+
+const (
+	// SuffixGen is a Suffix of type gen.
+	SuffixGen Suffix = "gen"
+)
+
+var ErrInvalidSuffix = errors.New("not a valid Suffix")
+
+// String implements the Stringer interface.
+func (x Suffix) String() string {
+	return string(x)
+}
+
+// IsValid provides a quick way to determine if the typed value is
+// part of the allowed enumerated values
+func (x Suffix) IsValid() bool {
+	_, err := ParseSuffix(string(x))
+	return err == nil
+}
+
+var _SuffixValue = map[string]Suffix{
+	"gen": SuffixGen,
+}
+
+// ParseSuffix attempts to convert a string to a Suffix.
+func ParseSuffix(name string) (Suffix, error) {
+	if x, ok := _SuffixValue[name]; ok {
+		return x, nil
+	}
+	return Suffix(""), fmt.Errorf("%s is %w", name, ErrInvalidSuffix)
+}
diff --git a/example/suffix.enum.gen_test.go b/example/suffix.enum.gen_test.go
new file mode 100644
index 0000000..265a805
--- /dev/null
+++ b/example/suffix.enum.gen_test.go
@@ -0,0 +1,46 @@
+// Code generated by go-enum DO NOT EDIT.
+// Version: example
+// Revision: example
+// Build Date: example
+// Built By: example
+
+//go:build example
+// +build example
+
+package example
+
+import (
+	"errors"
+	"fmt"
+)
+
+const (
+	// SuffixTestSomeItem is a SuffixTest of type some_item.
+	SuffixTestSomeItem SuffixTest = "some_item"
+)
+
+var ErrInvalidSuffixTest = errors.New("not a valid SuffixTest")
+
+// String implements the Stringer interface.
+func (x SuffixTest) String() string {
+	return string(x)
+}
+
+// IsValid provides a quick way to determine if the typed value is
+// part of the allowed enumerated values
+func (x SuffixTest) IsValid() bool {
+	_, err := ParseSuffixTest(string(x))
+	return err == nil
+}
+
+var _SuffixTestValue = map[string]SuffixTest{
+	"some_item": SuffixTestSomeItem,
+}
+
+// ParseSuffixTest attempts to convert a string to a SuffixTest.
+func ParseSuffixTest(name string) (SuffixTest, error) {
+	if x, ok := _SuffixTestValue[name]; ok {
+		return x, nil
+	}
+	return SuffixTest(""), fmt.Errorf("%s is %w", name, ErrInvalidSuffixTest)
+}
diff --git a/example/suffix.go b/example/suffix.go
new file mode 100644
index 0000000..e757bf2
--- /dev/null
+++ b/example/suffix.go
@@ -0,0 +1,9 @@
+//go:generate ../bin/go-enum -b example --output-suffix .enum.gen
+
+//go:build example
+// +build example
+
+package example
+
+// Suffix ENUM(gen)
+type Suffix string
diff --git a/example/suffix_test.go b/example/suffix_test.go
new file mode 100644
index 0000000..d8f0344
--- /dev/null
+++ b/example/suffix_test.go
@@ -0,0 +1,29 @@
+//go:generate ../bin/go-enum -b example --output-suffix .enum.gen
+
+//go:build example
+// +build example
+
+package example
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// SuffixTest ENUM(some_item)
+type SuffixTest string
+
+func TestSuffix(t *testing.T) {
+	x := Suffix("")
+	assert.Equal(t, "", x.String())
+
+	assert.Equal(t, Suffix("gen"), SuffixGen)
+}
+
+func TestSuffixTest(t *testing.T) {
+	x := SuffixTest("")
+	assert.Equal(t, "", x.String())
+
+	assert.Equal(t, SuffixTest("some_item"), SuffixTestSomeItem)
+}
diff --git a/main.go b/main.go
index 10c166e..94ec6c3 100644
--- a/main.go
+++ b/main.go
@@ -42,6 +42,7 @@ type rootT struct {
 	ForceLower        bool
 	ForceUpper        bool
 	NoComments        bool
+	OutputSuffix      string
 }
 
 func main() {
@@ -174,6 +175,11 @@ func main() {
 				Usage:       "Adds build tags to a generated enum file.",
 				Destination: &argv.BuildTags,
 			},
+			&cli.StringFlag{
+				Name:        "output-suffix",
+				Usage:       "Changes the default filename suffix of _enum to something else.  `.go` will be appended to the end of the string no matter what, so that `_test.go` cases can be accommodated ",
+				Destination: &argv.OutputSuffix,
+			},
 		},
 		Action: func(ctx *cli.Context) error {
 			aliases, err := generator.ParseAliases(argv.Aliases.Value())
@@ -262,14 +268,20 @@ func main() {
 					filenames = fn
 				}
 
+				outputSuffix := `_enum`
+				if argv.OutputSuffix != "" {
+					outputSuffix = argv.OutputSuffix
+				}
+
 				for _, fileName := range filenames {
 					originalName := fileName
 
 					out("go-enum started. file: %s\n", color.Cyan(originalName))
 					fileName, _ = filepath.Abs(fileName)
-					outFilePath := fmt.Sprintf("%s_enum.go", strings.TrimSuffix(fileName, filepath.Ext(fileName)))
+
+					outFilePath := fmt.Sprintf("%s%s.go", strings.TrimSuffix(fileName, filepath.Ext(fileName)), outputSuffix)
 					if strings.HasSuffix(fileName, "_test.go") {
-						outFilePath = strings.Replace(outFilePath, "_test_enum.go", "_enum_test.go", 1)
+						outFilePath = strings.Replace(outFilePath, "_test"+outputSuffix+".go", outputSuffix+"_test.go", 1)
 					}
 
 					// Parse the file given in arguments