diff --git a/tests/dummy b/tests/dummy
deleted file mode 100644
index 557db03de..000000000
--- a/tests/dummy
+++ /dev/null
@@ -1 +0,0 @@
-Hello World
diff --git a/tests/simple.sh b/tests/simple.sh
index 4f9f6e964..a94b6d185 100644
--- a/tests/simple.sh
+++ b/tests/simple.sh
@@ -18,6 +18,7 @@ if test "$text" != "Hello World!"; then exit 1; fi
 $nixstore --delete $outPath
 if test -e $outPath/hello; then false; fi
 
+echo 'Hello World' > ./dummy
 outPath="$(NIX_STORE_DIR=/foo $nixinstantiate --readonly-mode hash-check.nix)"
 if test "$outPath" != "/foo/lfy1s6ca46rm5r6w4gg9hc0axiakjcnm-dependencies.drv"; then
     echo "hashDerivationModulo appears broken, got $outPath"