diff --git a/src/cmd/5l/obj.c b/src/cmd/5l/obj.c
index b93dc63fc9d8c36a1b60b85702b3d05fb9a462c7..14967194394335f4c6f754b4bc02f231c5e71962 100644
--- a/src/cmd/5l/obj.c
+++ b/src/cmd/5l/obj.c
@@ -136,6 +136,11 @@ main(int argc, char *argv[])
 	case 'V':
 		print("%cl version %s\n", thechar, getgoversion());
 		errorexit();
+	case 'X':
+		// TODO: golang.org/issue/2676
+		EARGF(usage());
+		EARGF(usage());
+		break;
 	} ARGEND
 
 	USED(argc);
diff --git a/src/cmd/6l/obj.c b/src/cmd/6l/obj.c
index c8a46fc2bf6bc65c7e7ee8dbd006e70d28fb887e..a1f9e2d111726a77c567a400e1a475027208e946 100644
--- a/src/cmd/6l/obj.c
+++ b/src/cmd/6l/obj.c
@@ -132,6 +132,11 @@ main(int argc, char *argv[])
 	case 'V':
 		print("%cl version %s\n", thechar, getgoversion());
 		errorexit();
+	case 'X':
+		// TODO: golang.org/issue/2676
+		EARGF(usage());
+		EARGF(usage());
+		break;
 	} ARGEND
 
 	if(argc != 1)
diff --git a/src/cmd/8l/obj.c b/src/cmd/8l/obj.c
index 58349c6f890dafa71f97b2f223b79a4f8624c764..99726ec1800534b2c7b3062bf54cae6b9f1c5459 100644
--- a/src/cmd/8l/obj.c
+++ b/src/cmd/8l/obj.c
@@ -137,6 +137,11 @@ main(int argc, char *argv[])
 	case 'V':
 		print("%cl version %s\n", thechar, getgoversion());
 		errorexit();
+	case 'X':
+		// TODO: golang.org/issue/2676
+		EARGF(usage());
+		EARGF(usage());
+		break;
 	} ARGEND
 
 	if(argc != 1)