diff --git a/source-builder/sb/getsources.py b/source-builder/sb/getsources.py
index 7e516b5..b52bc0e 100644
--- a/source-builder/sb/getsources.py
+++ b/source-builder/sb/getsources.py
@@ -281,7 +281,7 @@ class buildset:
             self.macros = copy.copy(opts.defaults)
         else:
             self.macros = copy.copy(macros)
-        self.macros.define('_rsb_get_source')
+        self.macros.define('_rsb_getting_source')
         log.trace('_bset: %s: macro defaults' % (bset))
         log.trace(str(self.macros))
         self.bset = bset