diff --git a/profiles/calculate/make.defaults b/profiles/calculate/make.defaults
index 82218cec8..4bf4d7c2e 100644
--- a/profiles/calculate/make.defaults
+++ b/profiles/calculate/make.defaults
@@ -29,7 +29,7 @@ AUTOCLEAN="yes"
 CAMERAS="*"
 DISTDIR="/var/calculate/remote/distfiles"
 DRACUT_MODULES="dmraid dmsquash-live plymouth lvm mdraid nfs"
-EMERGE_DEFAULT_OPTS="${EMERGE_DEFAULT_OPTS} --backtrack=15 --binpkg-respect-use=y --quiet-build=n --with-bdeps=y"
+EMERGE_DEFAULT_OPTS="${EMERGE_DEFAULT_OPTS} --binpkg-respect-use=y --quiet-build=n --with-bdeps=y"
 FEATURES="metadata-transfer parallel-install -userpriv"
 FOO2ZJS_DEVICES="*"
 INPUT_DEVICES="${INPUT_DEVICES} mutouch synaptics"