diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index be650c4..553c6a2 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -1,6 +1,6 @@
 SSTATE_VERSION = "2"
 
-SSTATE_MANIFESTS = "${TMPDIR}/sstate-control"
+SSTATE_MANIFESTS ?= "${TMPDIR}/sstate-control"
 SSTATE_MANFILEBASE = "${SSTATE_MANIFESTS}/manifest-${SSTATE_MANMACH}-"
 SSTATE_MANFILEPREFIX = "${SSTATE_MANFILEBASE}${PN}"