diff --git a/pkg/configutils/variable.go b/pkg/configutils/variable.go
index 5ef7084..0c1f7af 100644
--- a/pkg/configutils/variable.go
+++ b/pkg/configutils/variable.go
@@ -12,7 +12,7 @@ type VariableHolders = []interface{}
 
 var variableMapping = map[string][]interface{}{} // source => [holder1, ...]
 var variableLocker = sync.RWMutex{}
-var regexpNamedVariable = regexp.MustCompile("\\${[\\w.-]+}")
+var regexpNamedVariable = regexp.MustCompile(`\${[\w.-]+}`)
 
 // ParseVariables 分析变量
 func ParseVariables(source string, replacer func(varName string) (value string)) string {