diff --git a/go/analysis/internal/analysisflags/help.go b/go/analysis/internal/analysisflags/help.go
index 043b9789..c5a70f3b 100644
--- a/go/analysis/internal/analysisflags/help.go
+++ b/go/analysis/internal/analysisflags/help.go
@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"os"
 	"sort"
 	"strings"
 
@@ -47,6 +48,7 @@ func Help(progname string, analyzers []*analysis.Analyzer, args []string) {
 				fs.Var(f.Value, f.Name, f.Usage)
 			}
 		})
+		fs.SetOutput(os.Stdout)
 		fs.PrintDefaults()
 
 		fmt.Printf("\nTo see details and flags of a specific analyzer, run '%s help name'.\n", progname)
@@ -75,6 +77,7 @@ outer:
 					}
 					fs.Var(f.Value, a.Name+"."+f.Name, f.Usage)
 				})
+				fs.SetOutput(os.Stdout)
 				fs.PrintDefaults()
 
 				if len(paras) > 1 {