diff --git a/tests/letstest/scripts/test_sdists.sh b/tests/letstest/scripts/test_sdists.sh
index a1736a64c..0f2b0ad0e 100755
--- a/tests/letstest/scripts/test_sdists.sh
+++ b/tests/letstest/scripts/test_sdists.sh
@@ -40,9 +40,7 @@ for pkg in acme certbot $PLUGINS; do
     tar -xvf "$pkg-$VERSION.tar.gz"
     cd "$pkg-$VERSION"
     python setup.py build
-    cd build/lib
-    python -m pytest ../../tests
-    cd -
+    python -m pytest
     python setup.py install
-    cd $TEMP_DIR
+    cd -
 done