diff --git a/package/m4/m4.mk b/package/m4/m4.mk
index 173bba85c5..1e891c50f7 100644
--- a/package/m4/m4.mk
+++ b/package/m4/m4.mk
@@ -7,6 +7,8 @@
 M4_VERSION = 1.4.16
 M4_SOURCE = m4-$(M4_VERSION).tar.bz2
 M4_SITE = $(BR2_GNU_MIRROR)/m4
+M4_LICENSE = GPLv3+
+M4_LICENSE_FILES = COPYING
 M4_CONF_ENV = gl_cv_func_gettimeofday_clobber=no
 
 ifneq ($(BR2_USE_WCHAR),y)