diff --git a/classes/externalgitsrc.bbclass b/classes/externalgitsrc.bbclass
index 68caa71..08a7023 100644
--- a/classes/externalgitsrc.bbclass
+++ b/classes/externalgitsrc.bbclass
@@ -7,7 +7,7 @@ def get_externalsrc_rev(d):
     import subprocess
     srcdir = d.expand(d.getVar("EXTERNALSRC"))
     #bb.note("external source: %s" % (srcdir))
-    rev = subprocess.check_output("cd %s && git describe --tag" % (srcdir),
+    rev = subprocess.check_output("cd %s && git describe --tags --dirty " % (srcdir),
                                   shell=True).strip()
     
     rev = rev.decode("utf-8")