diff --git a/influxql/ast.go b/influxql/ast.go
index 9ce07e2d81..0c7877f078 100644
--- a/influxql/ast.go
+++ b/influxql/ast.go
@@ -2522,7 +2522,7 @@ func (f *Field) String() string {
 	if f.Alias == "" {
 		return str
 	}
-	return fmt.Sprintf("%s AS %s", str, fmt.Sprintf(`"%s"`, f.Alias))
+	return fmt.Sprintf("%s AS %s", str, QuoteIdent(f.Alias))
 }
 
 // Sort Interface for Fields