diff --git a/src/internal/buildcfg/cfg.go b/src/internal/buildcfg/cfg.go
index 19293cd799096ea16c08e594a8e7d1802867ad1a..05d28dd8375833dcd977c432ec65e2e87bddae2f 100644
--- a/src/internal/buildcfg/cfg.go
+++ b/src/internal/buildcfg/cfg.go
@@ -317,7 +317,7 @@ func gogoarchTags() []string {
 		}
 		if major == 9 {
 			for i := 0; i <= minor+5 && i <= 9; i++ {
-				list = append(list, fmt.Sprint("%s.v%d.%d", GOARCH, 8, i))
+				list = append(list, fmt.Sprintf("%s.v%d.%d", GOARCH, 8, i))
 			}
 		}
 		return list