1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index 70e6fd76b3..f7ed66d8c6 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -73,7 +73,8 @@ python () {
 
         fetch_tasks = ['do_fetch', 'do_unpack']
         # If we deltask do_patch, there's no dependency to ensure do_unpack gets run, so add one
-        d.appendVarFlag('do_configure', 'deps', ['do_unpack'])
+        # Note that we cannot use d.appendVarFlag() here because deps is expected to be a list object, not a string
+        d.setVarFlag('do_configure', 'deps', (d.getVarFlag('do_configure', 'deps', False) or []) + ['do_unpack'])
 
         for task in d.getVar("SRCTREECOVEREDTASKS", True).split():
             if local_srcuri and task in fetch_tasks: