diff --git a/README.md b/README.md
index 88f3f14..a7603d2 100644
--- a/README.md
+++ b/README.md
@@ -150,11 +150,10 @@ Example (for being reminded one week after the ctf has finished):
 
 ## Log command deletion
 
-To enable logging of deleting messages containing specific keywords, set `delete_watch_keywords` in `config/config.json` to a comma separated list of keywords. 
-Clear or remove the setting to disable deletion logging.
+To enable logging of deleting messages containing specific keywords, set `delete_watch_keywords` in `config/config.json` to an array of strings to watch for.
 
 Example
 ```
 {
-    "delete_watch_keywords" : "workon, reload, endctf"
+    "delete_watch_keywords" : ["workon", "reload", "endctf"]
 }
diff --git a/config/config.json.template b/config/config.json.template
index 6959cc1..3ffdffc 100644
--- a/config/config.json.template
+++ b/config/config.json.template
@@ -8,7 +8,7 @@
   "wolfram_app_id" : "",
   "archive_ctf_reminder_offset" : "168",
   "archive_everything": true,
-  "delete_watch_keywords" : "",
+  "delete_watch_keywords" : [],
   "intro_message" : "",
   "private_ctfs": false,
   "allow_signup": false,
diff --git a/server/botserver.py b/server/botserver.py
index 5a2a108..5ff923c 100644
--- a/server/botserver.py
+++ b/server/botserver.py
@@ -96,16 +96,14 @@ def parse_slack_message(self, message_list):
                 self.slack_wrapper.post_message(msg['channel'], warning)
             # Check for deletion of messages containing keywords
             elif "subtype" in msg and msg["subtype"] == "message_deleted":
-                log_deletions = self.get_config_option("delete_watch_keywords")
+                delete_keywords = self.get_config_option("delete_watch_keywords")
 
-                if log_deletions:
-                    previous_msg = msg['previous_message']['text']
-                    delete_keywords = log_deletions.split(",")
+                previous_msg = msg['previous_message']['text']
 
-                    if any(keyword.strip() in previous_msg for keyword in delete_keywords):
-                        user_name = self.slack_wrapper.get_member(msg['previous_message']['user'])
-                        display_name = get_display_name(user_name)
-                        self.slack_wrapper.post_message(msg['channel'], "*{}* deleted : `{}`".format(display_name, previous_msg))
+                if any(keyword in previous_msg for keyword in delete_keywords):
+                    user_name = self.slack_wrapper.get_member(msg["previous_message"]["user"])
+                    display_name = get_display_name(user_name)
+                    self.slack_wrapper.post_message(msg['channel'], "*{}* deleted : `{}`".format(display_name, previous_msg))
             # Greet new users
             elif msg.get("type") == "im_created":
                 self.slack_wrapper.post_message(msg['user'], self.get_config_option("intro_message"))