diff --git a/LEGO1/mxparam.h b/LEGO1/mxparam.h
index c4150ff7..ffbf1530 100644
--- a/LEGO1/mxparam.h
+++ b/LEGO1/mxparam.h
@@ -1,6 +1,7 @@
 #ifndef MXPARAM_H
 #define MXPARAM_H
 
+#include "compat.h"
 #include "mxomnicreateparambase.h"
 #include "mxtypes.h"
 
@@ -12,7 +13,7 @@ class MxParam : public MxOmniCreateParamBase
 public:
   inline MxParam(MxS32 p_type, MxCore *p_sender) : MxOmniCreateParamBase(), m_type(p_type), m_sender(p_sender){}
 
-  virtual ~MxParam(){}; // vtable+0x0 (scalar deleting destructor)
+  virtual ~MxParam() override {} // vtable+0x0 (scalar deleting destructor)
   virtual MxParam *Clone(); // vtable+0x4
 
   inline MxS32 GetType() const
@@ -25,7 +26,7 @@ class MxParam : public MxOmniCreateParamBase
     return m_sender;
   }
 
-private:
+protected:
   MxS32 m_type; // 0x4
   MxCore *m_sender; // 0x8
 };
diff --git a/LEGO1/mxstreamcontroller.cpp b/LEGO1/mxstreamcontroller.cpp
index d8484a22..09f2d95c 100644
--- a/LEGO1/mxstreamcontroller.cpp
+++ b/LEGO1/mxstreamcontroller.cpp
@@ -15,7 +15,7 @@ MxStreamController::~MxStreamController()
 }
 
 // OFFSET: LEGO1 0x100c20d0 STUB
-MxBool MxStreamController::CanBeDeleted()
+MxBool MxStreamController::FUN_100c20d0(MxDSObject &p_obj)
 {
   // TODO
   return TRUE;
diff --git a/LEGO1/mxstreamcontroller.h b/LEGO1/mxstreamcontroller.h
index 14fc7abd..c7e4309e 100644
--- a/LEGO1/mxstreamcontroller.h
+++ b/LEGO1/mxstreamcontroller.h
@@ -5,6 +5,7 @@
 #include "mxatomid.h"
 #include "mxcriticalsection.h"
 #include "mxcore.h"
+#include "mxdsobject.h"
 
 // VTABLE 0x100dc968
 // SIZE 0x64
@@ -30,7 +31,7 @@ class MxStreamController : public MxCore
 
   virtual MxResult Open(const char *p_filename); // vtable+0x14
 
-  MxBool CanBeDeleted();
+  MxBool FUN_100c20d0(MxDSObject &p_obj);
 
   MxCriticalSection m_criticalSection;
   MxAtomId atom;
diff --git a/LEGO1/mxstreamer.cpp b/LEGO1/mxstreamer.cpp
index e2b9b162..2121773e 100644
--- a/LEGO1/mxstreamer.cpp
+++ b/LEGO1/mxstreamer.cpp
@@ -8,6 +8,8 @@
 
 DECOMP_SIZE_ASSERT(MxStreamer, 0x2c);
 
+#define MXSTREAMER_DELETE_NOTIFY 6
+
 // OFFSET: LEGO1 0x100b8f00
 MxStreamer::MxStreamer()
 {
@@ -69,10 +71,9 @@ MxStreamController *MxStreamer::Open(const char *p_name, MxU16 p_lookupType)
   return stream;
 }
 
-// OFFSET: LEGO1 0x100b9570 STUB
+// OFFSET: LEGO1 0x100b9570
 MxLong MxStreamer::Close(const char *p)
 {
-  // TODO: Incomplete
   MxDSAction ds;
 
   ds.SetUnknown24(-2);
@@ -83,8 +84,10 @@ MxLong MxStreamer::Close(const char *p)
     if (!p || !strcmp(p, c->atom.GetInternal())) {
       m_openStreams.erase(it);
 
-      if (!c->CanBeDeleted()) {
-        // TODO: Send notification to `c`
+      if (!c->FUN_100c20d0(ds)) {
+        MxStreamerNotification notif(MXSTREAMER_DELETE_NOTIFY, NULL, c);
+
+        NotificationManager()->Send(this, &notif);
       } else {
         delete c;
       }
@@ -96,6 +99,12 @@ MxLong MxStreamer::Close(const char *p)
   return FAILURE;
 }
 
+// OFFSET: LEGO1 0x100b9700
+MxParam *MxStreamerNotification::Clone()
+{
+  return new MxStreamerNotification(m_type, m_sender, m_controller);
+}
+
 // OFFSET: LEGO1 0x100b9870
 MxStreamController *MxStreamer::GetOpenStream(const char *p_name)
 {
@@ -127,7 +136,20 @@ MxResult MxStreamer::AddStreamControllerToOpenList(MxStreamController *stream)
 // OFFSET: LEGO1 0x100b9b60
 MxLong MxStreamer::Notify(MxParam &p)
 {
-  // TODO
+  if (p.GetType() == MXSTREAMER_DELETE_NOTIFY) {
+    MxDSAction ds;
+
+    ds.SetUnknown24(-2);
+
+    MxStreamController *c = static_cast<MxStreamerNotification&>(p).GetController();
+
+    if (!c->FUN_100c20d0(ds)) {
+      MxStreamerNotification notif(MXSTREAMER_DELETE_NOTIFY, NULL, c);
+      NotificationManager()->Send(this, &notif);
+    } else {
+      delete c;
+    }
+  }
 
   return 0;
 }
diff --git a/LEGO1/mxstreamer.h b/LEGO1/mxstreamer.h
index 8b04f4ca..5ab02cbb 100644
--- a/LEGO1/mxstreamer.h
+++ b/LEGO1/mxstreamer.h
@@ -5,6 +5,7 @@
 
 #include "decomp.h"
 #include "mxcore.h"
+#include "mxparam.h"
 #include "mxstreamcontroller.h"
 #include "mxtypes.h"
 
@@ -39,6 +40,24 @@ class MxStreamerSubClass3 : public MxStreamerSubClass1
   inline MxStreamerSubClass3() : MxStreamerSubClass1(0x80) {}
 };
 
+class MxStreamerNotification : public MxParam
+{
+public:
+  inline MxStreamerNotification(MxS32 p_type, MxCore *p_sender, MxStreamController *p_ctrlr) : MxParam(p_type, p_sender)
+  {
+    m_controller = p_ctrlr;
+  }
+
+  virtual ~MxStreamerNotification() override {}
+
+  virtual MxParam *Clone() override;
+
+  MxStreamController *GetController() { return m_controller; }
+
+private:
+  MxStreamController *m_controller;
+};
+
 // VTABLE 0x100dc710
 // SIZE 0x2c
 class MxStreamer : public MxCore