diff --git a/README.rst b/README.rst
index 84d70e6b..ce076344 100644
--- a/README.rst
+++ b/README.rst
@@ -100,7 +100,7 @@ Install with,
     HOOK='eval "$(direnv hook '$DEFAULT_SHELL')"'
 
     # Install the hook, if not already
-    grep "$HOOK" $SHELL_RC_FILE || echo "$HOOK" >>$SHELL_RC_FILE
+    grep ^"$HOOK"$ $SHELL_RC_FILE || echo "$HOOK" >>$SHELL_RC_FILE
     source $SHELL_RC_FILE
 
 This is what the ``.envrc`` file is for. It automatically activates ``venv``.
diff --git a/tests/resources/prefs.json b/tests/resources/prefs.json
deleted file mode 100644
index 27b89209..00000000
--- a/tests/resources/prefs.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "current_user": 1
-}