diff --git a/sdk_container/src/third_party/portage-stable/sys-devel/m4/m4-1.4.19-r2.ebuild b/sdk_container/src/third_party/portage-stable/sys-devel/m4/m4-1.4.19-r2.ebuild
index f30969b49e..efb93a8e18 100644
--- a/sdk_container/src/third_party/portage-stable/sys-devel/m4/m4-1.4.19-r2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-devel/m4/m4-1.4.19-r2.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/m4.asc
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/m4.asc
 inherit verify-sig
 
 DESCRIPTION="GNU macro processor"