diff --git a/tests/test-hook.t b/tests/test-hook.t
--- a/tests/test-hook.t
+++ b/tests/test-hook.t
@@ -1407,12 +1407,12 @@
 
   $ cat << EOF >> .hg/hgrc
   > [hooks]
-  > pre-version.testing-default=echo '### default ###' plain: \${HGPLAIN:-'<unset>'}
-  > pre-version.testing-yes=echo '### yes #######' plain: \${HGPLAIN:-'<unset>'}
+  > pre-version.testing-default=sh -c "echo '### default ###' plain: \${HGPLAIN:-'<unset>'}"
+  > pre-version.testing-yes=sh -c "echo '### yes #######' plain: \${HGPLAIN:-'<unset>'}"
   > pre-version.testing-yes:run-with-plain=yes
-  > pre-version.testing-no=echo '### no ########' plain: \${HGPLAIN:-'<unset>'}
+  > pre-version.testing-no=sh -c "echo '### no ########' plain: \${HGPLAIN:-'<unset>'}"
   > pre-version.testing-no:run-with-plain=no
-  > pre-version.testing-auto=echo '### auto ######' plain: \${HGPLAIN:-'<unset>'}
+  > pre-version.testing-auto=sh -c "echo '### auto ######' plain: \${HGPLAIN:-'<unset>'}"
   > pre-version.testing-auto:run-with-plain=auto
   > EOF