diff --git a/src/emucore/Console.cxx b/src/emucore/Console.cxx
index b18cf0098..867eee9d9 100644
--- a/src/emucore/Console.cxx
+++ b/src/emucore/Console.cxx
@@ -583,7 +583,13 @@ void Console::togglePhosphor()
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void Console::changePhosphor(int direction)
 {
-  int blend = stoi(myProperties.get(PropType::Display_PPBlend));
+  int blend = 0;
+
+  try
+  {
+    blend = stoi(myProperties.get(PropType::Display_PPBlend));
+  }
+  catch (...) {}
 
   if(direction == +1)       // increase blend
   {
diff --git a/src/emucore/TIASurface.cxx b/src/emucore/TIASurface.cxx
index 95e22fa65..b99f33be0 100644
--- a/src/emucore/TIASurface.cxx
+++ b/src/emucore/TIASurface.cxx
@@ -91,7 +91,11 @@ void TIASurface::initialize(const Console& console,
   }
   else
   {
-    p_blend = stoi(console.properties().get(PropType::Display_PPBlend));
+    try
+    {
+      p_blend = stoi(console.properties().get(PropType::Display_PPBlend));
+    }
+    catch (...) {}
     enable = console.properties().get(PropType::Display_Phosphor) == "YES";
   }
   enablePhosphor(enable, p_blend);
diff --git a/src/gui/GameInfoDialog.cxx b/src/gui/GameInfoDialog.cxx
index 3929268ad..9ed16a231 100644
--- a/src/gui/GameInfoDialog.cxx
+++ b/src/gui/GameInfoDialog.cxx
@@ -460,7 +460,14 @@ void GameInfoDialog::loadEmulationProperties(const Properties& props)
   myPPBlend->setEnabled(!alwaysPhosphor && usePhosphor);
 
   const string& blend = props.get(PropType::Display_PPBlend);
-  myPPBlend->setValue(stoi(blend));
+  try
+  {
+    myPPBlend->setValue(stoi(blend));
+  }
+  catch (...)
+  {
+    myPPBlend->setValue(0);
+  }
 
   // set vertical center
   Int32 vcenter = stoi(props.get(PropType::Display_VCenter));