diff --git a/src/emucore/CartCDF.cxx b/src/emucore/CartCDF.cxx
index fa46611be..601437635 100644
--- a/src/emucore/CartCDF.cxx
+++ b/src/emucore/CartCDF.cxx
@@ -114,7 +114,7 @@ CartridgeCDF::CartridgeCDF(const ByteBuffer& image, size_t size,
 
   setInitialState();
 
-  myPlusROM = make_unique<PlusROM>(mySettings);
+  myPlusROM = make_unique<PlusROM>(mySettings, *this);
 
   // Determine whether we have a PlusROM cart
   myPlusROM->initialize(myImage, mySize);
diff --git a/src/emucore/CartDPCPlus.cxx b/src/emucore/CartDPCPlus.cxx
index 377928ae6..bba939162 100644
--- a/src/emucore/CartDPCPlus.cxx
+++ b/src/emucore/CartDPCPlus.cxx
@@ -80,7 +80,7 @@ CartridgeDPCPlus::CartridgeDPCPlus(const ByteBuffer& image, size_t size,
 
   setInitialState();
 
-  myPlusROM = make_unique<PlusROM>(mySettings);
+  myPlusROM = make_unique<PlusROM>(mySettings, *this);
 
   // Determine whether we have a PlusROM cart
   myPlusROM->initialize(myImage, mySize);
diff --git a/src/emucore/CartEnhanced.cxx b/src/emucore/CartEnhanced.cxx
index f76efaaf7..6b5c8b6e8 100644
--- a/src/emucore/CartEnhanced.cxx
+++ b/src/emucore/CartEnhanced.cxx
@@ -56,7 +56,7 @@ CartridgeEnhanced::CartridgeEnhanced(const ByteBuffer& image, size_t size,
   // space will be filled with 0's from above
   std::copy_n(image.get(), std::min(mySize, size), myImage.get());
 
-  myPlusROM = make_unique<PlusROM>(mySettings);
+  myPlusROM = make_unique<PlusROM>(mySettings, *this);
 
   // Determine whether we have a PlusROM cart
   // PlusROM needs to call peek() method, so disable direct peeks
diff --git a/src/emucore/PlusROM.cxx b/src/emucore/PlusROM.cxx
index 7fe397494..c885d023d 100644
--- a/src/emucore/PlusROM.cxx
+++ b/src/emucore/PlusROM.cxx
@@ -180,8 +180,9 @@ class PlusROMRequest {
 };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-PlusROM::PlusROM(const Settings& settings)
-  : mySettings(settings)
+PlusROM::PlusROM(const Settings& settings, const Cartridge& cart)
+  : mySettings(settings),
+    myCart(cart)
 {
 }
 
@@ -229,6 +230,8 @@ bool PlusROM::initialize(const ByteBuffer& image, size_t size)
 bool PlusROM::peekHotspot(uInt16 address, uInt8& value)
 {
 #if defined(HTTP_LIB_SUPPORT)
+  if(myCart.bankLocked()) return false;
+
   switch(address & 0x1FFF)
   {
     // invalid reads from write addresses
@@ -262,6 +265,8 @@ bool PlusROM::peekHotspot(uInt16 address, uInt8& value)
 bool PlusROM::pokeHotspot(uInt16 address, uInt8 value)
 {
 #if defined(HTTP_LIB_SUPPORT)
+  if(myCart.bankLocked()) return false;
+
   switch(address & 0x1FFF)
   {
     // valid writes
diff --git a/src/emucore/PlusROM.hxx b/src/emucore/PlusROM.hxx
index 790307372..104ef9a3f 100644
--- a/src/emucore/PlusROM.hxx
+++ b/src/emucore/PlusROM.hxx
@@ -53,7 +53,7 @@ class PlusROMRequest;
 class PlusROM : public Serializable
 {
   public:
-    PlusROM(const Settings& settings);
+    PlusROM(const Settings& settings, const Cartridge& cart);
     ~PlusROM() override = default;
 
   public:
@@ -145,6 +145,8 @@ class PlusROM : public Serializable
 
   private:
     const Settings& mySettings;
+    const Cartridge& myCart;
+
     bool myIsPlusROM{false};
     string myHost;
     string myPath;