diff --git a/poky/meta/classes/externalsrc.bbclass b/poky/meta/classes/externalsrc.bbclass
index b00fdba..aedd78a 100644
--- a/poky/meta/classes/externalsrc.bbclass
+++ b/poky/meta/classes/externalsrc.bbclass
@@ -75,6 +75,8 @@
 
         # Dummy value because the default function can't be called with blank SRC_URI
         d.setVar('SRCPV', '999')
+        # sstate is never going to work for external source trees, disable it
+        d.setVar('SSTATE_SKIP_CREATION', '1')
 
         if d.getVar('CONFIGUREOPT_DEPTRACK') == '--disable-dependency-tracking':
             d.setVar('CONFIGUREOPT_DEPTRACK', '')
@@ -82,10 +84,7 @@
         tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys())
 
         for task in tasks:
-            if task.endswith("_setscene"):
-                # sstate is never going to work for external source trees, disable it
-                bb.build.deltask(task, d)
-            elif os.path.realpath(d.getVar('S')) == os.path.realpath(d.getVar('B')):
+            if os.path.realpath(d.getVar('S')) == os.path.realpath(d.getVar('B')):
                 # Since configure will likely touch ${S}, ensure only we lock so one task has access at a time
                 d.appendVarFlag(task, "lockfiles", " ${S}/singletask.lock")