diff --git a/build_library/catalyst.sh b/build_library/catalyst.sh
index 3e0ea854a4..1804184b60 100644
--- a/build_library/catalyst.sh
+++ b/build_library/catalyst.sh
@@ -86,9 +86,6 @@ cat <<EOF
 [DEFAULT]
 main-repo = portage-stable
 
-[gentoo]
-disabled = true
-
 [coreos]
 location = /usr/portage
 
diff --git a/build_library/dev_image_util.sh b/build_library/dev_image_util.sh
index e15f56dbe1..1f27c6ce75 100755
--- a/build_library/dev_image_util.sh
+++ b/build_library/dev_image_util.sh
@@ -33,9 +33,6 @@ sudo_clobber "$1/etc/portage/repos.conf/coreos.conf" <<EOF
 [DEFAULT]
 main-repo = portage-stable
 
-[gentoo]
-disabled = true
-
 [coreos]
 location = /var/lib/portage/coreos-overlay
 sync-type = git
diff --git a/update_chroot b/update_chroot
index 6440b1e77e..439faf7063 100755
--- a/update_chroot
+++ b/update_chroot
@@ -99,9 +99,6 @@ sudo_clobber "/etc/portage/repos.conf/coreos.conf" <<EOF
 [DEFAULT]
 main-repo = portage-stable
 
-[gentoo]
-disabled = true
-
 [coreos]
 location = ${COREOS_OVERLAY}