diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index 73f99e87a8..6b03221c7f 100644
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -153,6 +153,10 @@ def find_license_files(d):
             find_license(node.s.replace("+", "").replace("*", ""))
             self.generic_visit(node)
 
+        def visit_Constant(self, node):
+            find_license(node.value.replace("+", "").replace("*", ""))
+            self.generic_visit(node)
+
     def find_license(license_type):
         try:
             bb.utils.mkdirhier(gen_lic_dest)