diff --git a/src/cmd/go/internal/work/build.go b/src/cmd/go/internal/work/build.go
index dd50fb4b50..aad231a2e3 100644
--- a/src/cmd/go/internal/work/build.go
+++ b/src/cmd/go/internal/work/build.go
@@ -2204,7 +2204,7 @@ func (gcToolchain) gc(b *Builder, p *load.Package, archive, obj string, asmhdr b
 		gcargs = append(gcargs, "-buildid", p.Internal.BuildID)
 	}
 	platform := cfg.Goos + "/" + cfg.Goarch
-	if p.Internal.OmitDebug || platform == "nacl/amd64p32" || platform == "darwin/arm" || platform == "darwin/arm64" {
+	if p.Internal.OmitDebug || platform == "nacl/amd64p32" || platform == "darwin/arm" || platform == "darwin/arm64" || cfg.Goos == "plan9" {
 		gcargs = append(gcargs, "-dwarf=false")
 	}