diff --git a/src/gam.spec b/src/gam.spec
index 6d7cf4fa..235c051a 100644
--- a/src/gam.spec
+++ b/src/gam.spec
@@ -9,7 +9,7 @@ from gam.var import GAM_VER_LIBS
 
 extra_files = []
 for pkg in GAM_VER_LIBS:
-    copy_metadata(pkg, recursive=True)
+    extra_files += copy_metadata(pkg, recursive=True)
 extra_files += [('cbcm-v1.1beta1.json', '.')]
 extra_files += [('contactdelegation-v1.json', '.')]
 extra_files += [('admin-directory_v1.1beta1.json', '.')]