diff --git a/tests/test-generaldelta.t b/tests/test-generaldelta.t
index a714eee1ac28e38be0252355f5323bbb28f09cfb_dGVzdHMvdGVzdC1nZW5lcmFsZGVsdGEudA==..0d62c3149fb9943a7c2518e3f47ea0161d37b993_dGVzdHMvdGVzdC1nZW5lcmFsZGVsdGEudA== 100644
--- a/tests/test-generaldelta.t
+++ b/tests/test-generaldelta.t
@@ -5,6 +5,11 @@
 implementation of parentdelta: third manifest revision would be fully
 inserted due to big distance from its paren revision (zero).
 
+  $ cat << EOF >> $HGRCPATH
+  > [format]
+  > sparse-revlog = no
+  > EOF
+
   $ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no
   $ cd repo
   $ echo foo > foo