diff --git a/src/cmd/dist/build.go b/src/cmd/dist/build.go
index c31d36acae..87739a510d 100644
--- a/src/cmd/dist/build.go
+++ b/src/cmd/dist/build.go
@@ -192,21 +192,6 @@ func xinit() {
 
 	gogcflags = os.Getenv("BOOT_GO_GCFLAGS")
 
-	// Add -mod=vendor to GOFLAGS so that commands won't try to resolve go.mod
-	// files for vendored external modules.
-	// TODO(golang.org/issue/30240): If the vendor directory contains the go.mod
-	// files, this probably won't be necessary.
-	// TODO(golang.org/issue/26849): Escape spaces in GOFLAGS if needed.
-	goflags := strings.Fields(os.Getenv("GOFLAGS"))
-	for i, flag := range goflags {
-		if strings.HasPrefix(flag, "-mod=") {
-			goflags = append(goflags[0:i], goflags[i+1:]...)
-			break
-		}
-	}
-	goflags = append(goflags, "-mod=vendor")
-	os.Setenv("GOFLAGS", strings.Join(goflags, " "))
-
 	cc, cxx := "gcc", "g++"
 	if defaultclang {
 		cc, cxx = "clang", "clang++"