diff --git a/internal/pkg/github/deployment.go b/internal/pkg/github/deployment.go
index cd5d8943..0478b46e 100644
--- a/internal/pkg/github/deployment.go
+++ b/internal/pkg/github/deployment.go
@@ -93,7 +93,7 @@ func (g *Github) GetConfig(ctx context.Context, u *ent.User, r *ent.Repo) (*exte
 	c := &extent.Config{}
 	if err := extent.UnmarshalYAML([]byte(content), c); err != nil {
 		return nil, e.NewError(
-			e.ErrorCodeConfigParseError,
+			e.ErrorCodeConfigInvalid,
 			err,
 		)
 	}
diff --git a/model/extent/config.go b/model/extent/config.go
index 8874bbe6..efdd5b4c 100644
--- a/model/extent/config.go
+++ b/model/extent/config.go
@@ -65,7 +65,7 @@ const (
 
 func UnmarshalYAML(content []byte, c *Config) error {
 	if err := yaml.Unmarshal([]byte(content), c); err != nil {
-		return eutil.NewError(eutil.ErrorCodeConfigParseError, err)
+		return eutil.NewError(eutil.ErrorCodeConfigInvalid, err)
 	}
 
 	c.source = content
@@ -101,11 +101,11 @@ func (c *Config) Eval(v *EvalValues) error {
 
 	evalued, err := envsubst.Eval(string(c.source), mapper)
 	if err != nil {
-		return eutil.NewError(eutil.ErrorCodeConfigParseError, err)
+		return eutil.NewError(eutil.ErrorCodeConfigInvalid, err)
 	}
 
 	if err := yaml.Unmarshal([]byte(evalued), c); err != nil {
-		return eutil.NewError(eutil.ErrorCodeConfigParseError, err)
+		return eutil.NewError(eutil.ErrorCodeConfigInvalid, err)
 	}
 
 	return nil
@@ -144,7 +144,7 @@ func (e *Env) IsDeployableRef(ref string) (bool, error) {
 
 	matched, err := regexp.MatchString(*e.DeployableRef, ref)
 	if err != nil {
-		return false, eutil.NewError(eutil.ErrorCodeConfigRegexpError, err)
+		return false, eutil.NewError(eutil.ErrorCodeConfigInvalid, err)
 	}
 
 	return matched, nil
@@ -158,7 +158,7 @@ func (e *Env) IsAutoDeployOn(ref string) (bool, error) {
 
 	matched, err := regexp.MatchString(*e.AutoDeployOn, ref)
 	if err != nil {
-		return false, eutil.NewError(eutil.ErrorCodeConfigRegexpError, err)
+		return false, eutil.NewError(eutil.ErrorCodeConfigInvalid, err)
 	}
 
 	return matched, nil
diff --git a/pkg/e/code.go b/pkg/e/code.go
index 6051057d..50b54096 100644
--- a/pkg/e/code.go
+++ b/pkg/e/code.go
@@ -6,12 +6,10 @@ import (
 )
 
 const (
-	// ErrorCodeConfigParseError is that an error occurs when it parse the file.
-	ErrorCodeConfigParseError ErrorCode = "config_parse_error"
+	// ErrorCodeConfigInvalid is that an error occurs when it parse the file.
+	ErrorCodeConfigInvalid ErrorCode = "config_parse_error"
 	// ErrorCodeConfigUndefinedEnv is that the environment is not defined in the configuration file.
 	ErrorCodeConfigUndefinedEnv ErrorCode = "config_undefined_env"
-	// ErrorCodeConfigRegexpError is the regexp(re2) is invalid.
-	ErrorCodeConfigRegexpError ErrorCode = "config_regexp_error"
 
 	// ErrorCodeDeploymentConflict is the deployment number is conflicted.
 	ErrorCodeDeploymentConflict ErrorCode = "deployment_conflict"
diff --git a/pkg/e/trans.go b/pkg/e/trans.go
index e19a8db2..088747cd 100644
--- a/pkg/e/trans.go
+++ b/pkg/e/trans.go
@@ -3,9 +3,8 @@ package e
 import "net/http"
 
 var messages = map[ErrorCode]string{
-	ErrorCodeConfigParseError:        "The configuration is invalid.",
+	ErrorCodeConfigInvalid:           "The configuration is invalid.",
 	ErrorCodeConfigUndefinedEnv:      "The environment is not defined in the configuration.",
-	ErrorCodeConfigRegexpError:       "The regexp is invalid.",
 	ErrorCodeDeploymentConflict:      "The conflict occurs, please retry.",
 	ErrorCodeDeploymentInvalid:       "The validation has failed.",
 	ErrorCodeDeploymentLocked:        "The environment is locked.",
@@ -31,9 +30,8 @@ func GetMessage(code ErrorCode) string {
 }
 
 var httpCodes = map[ErrorCode]int{
-	ErrorCodeConfigParseError:        http.StatusUnprocessableEntity,
+	ErrorCodeConfigInvalid:           http.StatusUnprocessableEntity,
 	ErrorCodeConfigUndefinedEnv:      http.StatusUnprocessableEntity,
-	ErrorCodeConfigRegexpError:       http.StatusUnprocessableEntity,
 	ErrorCodeDeploymentConflict:      http.StatusUnprocessableEntity,
 	ErrorCodeDeploymentInvalid:       http.StatusUnprocessableEntity,
 	ErrorCodeDeploymentLocked:        http.StatusUnprocessableEntity,