diff --git a/tests/syntax/dune b/tests/syntax/dune
index 48d4f37d21492a8d3de0f511f008571fb9b943b7..8e231d9e2555eb4f19d2f0bda8f502475ae9038e 100644
--- a/tests/syntax/dune
+++ b/tests/syntax/dune
@@ -1,4 +1,5 @@
 (cram
   (applies_to cpp-command)
   (enabled_if %{read:../../python-3.7-available})
+  (deps ../../src/init/boot/empty_file.exe)
 )