diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index 880556b834..d87363a88c 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -60,7 +60,7 @@ python () {
         if externalsrcbuild:
             d.setVar('B', externalsrcbuild)
         else:
-            d.setVar('B', '${WORKDIR}/${BPN}-${PV}/')
+            d.setVar('B', '${WORKDIR}/${BPN}-${PV}')
 
         local_srcuri = []
         fetch = bb.fetch2.Fetch((d.getVar('SRC_URI') or '').split(), d)