diff --git a/bot/lib/log-surroundings.js b/bot/lib/log-surroundings.js
index 2776b8c..ba84e7f 100644
--- a/bot/lib/log-surroundings.js
+++ b/bot/lib/log-surroundings.js
@@ -63,19 +63,20 @@ module.exports = async function logSurroundings() {
     }
   }
 
-  if (found.length > 0) {
-    const summary = found
-      .map(pos => bot.blockAt(pos)?.name)
-      .filter(Boolean)
-      .reduce((acc, name) => {
-        acc[name] = (acc[name] || 0) + 1;
-        return acc;
-      }, {});
-
-    const summaryMsg = Object.entries(summary)
+  const newTypes = Array.from(observedTypes);
+  if (newTypes.length > 0) {
+    const counts = {};
+    for (const pos of found) {
+      const name = bot.blockAt(pos)?.name;
+      if (newTypes.includes(name)) {
+        counts[name] = (counts[name] || 0) + 1;
+      }
+    }
+  
+    const summaryMsg = Object.entries(counts)
       .map(([name, count]) => `${count} ${name.replace(/_/g, ' ')}`)
       .join(', ');
-
-    bot.chat(`I noticed: ${summaryMsg}`);
+  
+    if (summaryMsg) bot.chat(`I noticed: ${summaryMsg}`);
   }
 };
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