diff --git a/src/plugin_debug_window.cpp b/src/plugin_debug_window.cpp
index f5356b7..147fe9b 100644
--- a/src/plugin_debug_window.cpp
+++ b/src/plugin_debug_window.cpp
@@ -48,7 +48,13 @@ void UpdateDebugWindow() {
         return;
     }
 
-    RawReplaceText(set.buffer, GetRange(set.buffer), u"Active buffers and views:\n");
+    RawReplaceText(set.buffer, GetRange(set.buffer), u"");
+#if OS_POSIX
+    struct rusage usage;
+    getrusage(RUSAGE_SELF, &usage);
+    RawAppendf(set.buffer, "MemoryUsage: %lld\n", usage.ru_maxrss);
+#endif
+
     For (Views) {
         Buffer *buffer = GetBuffer(it->active_buffer);
         RawAppendf(set.buffer, "view->id:%lld, buffer->id:%lld, buffer->name:%S\n", (long long)it->id.id, (long long)buffer->id.id, buffer->name);