diff --git a/src/emucore/tia/Ball.cxx b/src/emucore/tia/Ball.cxx
index 5279466f9..48f6946bf 100644
--- a/src/emucore/tia/Ball.cxx
+++ b/src/emucore/tia/Ball.cxx
@@ -305,6 +305,7 @@ bool Ball::save(Serializer& out) const
     out.putBool(myIsEnabled);
     out.putBool(myIsSuppressed);
     out.putBool(myIsDelaying);
+    out.putBool(myIsVisible);
 
     out.putByte(myHmmClocks);
     out.putByte(myCounter);
@@ -347,6 +348,7 @@ bool Ball::load(Serializer& in)
     myIsEnabled = in.getBool();
     myIsSuppressed = in.getBool();
     myIsDelaying = in.getBool();
+    myIsVisible = in.getBool();
 
     myHmmClocks = in.getByte();
     myCounter = in.getByte();
diff --git a/src/emucore/tia/Missile.cxx b/src/emucore/tia/Missile.cxx
index c71eee66a..93f824f1b 100644
--- a/src/emucore/tia/Missile.cxx
+++ b/src/emucore/tia/Missile.cxx
@@ -322,6 +322,7 @@ bool Missile::save(Serializer& out) const
     out.putByte(myEffectiveWidth);
     out.putByte(myLastMovementTick);
 
+    out.putBool(myIsVisible);
     out.putBool(myIsRendering);
     out.putByte(myRenderCounter);
 
@@ -364,6 +365,7 @@ bool Missile::load(Serializer& in)
     myEffectiveWidth = in.getByte();
     myLastMovementTick = in.getByte();
 
+    myIsVisible = in.getBool();
     myIsRendering = in.getBool();
     myRenderCounter = in.getByte();