diff --git a/src/common/ConfigManager.cpp b/src/common/ConfigManager.cpp
index 37948252..f84d3d09 100644
--- a/src/common/ConfigManager.cpp
+++ b/src/common/ConfigManager.cpp
@@ -248,7 +248,6 @@ int windowMaximized;
 int windowPositionX, bkpPosX = 0;
 int windowPositionY, bkpPosY = 0;
 uint32_t windowWidth;
-int winFlashSize;
 int winGbBorderOn;
 int winGbPrinterEnabled;
 int winPauseNextFrame;
@@ -534,7 +533,7 @@ void LoadConfig()
 	maxScale = ReadPref("maxScale", 0);
 	movieRecordDir = ReadPrefString("movieRecordDir");
 	openGL = ReadPrefHex("openGL");
-	optFlashSize = ReadPrefHex("flashSize");
+	optFlashSize = ReadPref("flashSize", 0);
 	pauseWhenInactive = ReadPref("pauseWhenInactive", 1);
 	recentFreeze = ReadPref("recentFreeze", 0);
 	rewindTimer = ReadPref("rewindTimer", 0);
@@ -569,7 +568,6 @@ void LoadConfig()
 	windowPositionX = ReadPref("windowX", -1);
 	windowPositionY = ReadPref("windowY", -1);
 	windowWidth = ReadPref("windowWidth", 0);
-	winFlashSize = ReadPref("flashSize", 0x10000);
 	winGbBorderOn = ReadPref("borderOn", 0);
 	winGbPrinterEnabled = ReadPref("gbPrinter", 0);
 
@@ -1334,6 +1332,8 @@ int ReadOpts(int argc, char ** argv)
 			// --opt-flash-size
 			if (optarg) {
 				optFlashSize = atoi(optarg);
+                                if (optFlashSize < 0 || optFlashSize > 1)
+                                    optFlashSize = 0;
 			}
 			break;
 
diff --git a/src/common/ConfigManager.h b/src/common/ConfigManager.h
index 0b7e5974..8397e75d 100644
--- a/src/common/ConfigManager.h
+++ b/src/common/ConfigManager.h
@@ -139,7 +139,6 @@ extern int windowMaximized;
 extern int windowPositionX, bkpPosX;
 extern int windowPositionY, bkpPosY;
 extern uint32_t windowWidth;
-extern int winFlashSize;
 extern int winGbBorderOn;
 extern int winGbPrinterEnabled;
 extern int winPauseNextFrame;
diff --git a/src/wx/guiinit.cpp b/src/wx/guiinit.cpp
index 81d7c82a..7daf5765 100644
--- a/src/wx/guiinit.cpp
+++ b/src/wx/guiinit.cpp
@@ -3597,7 +3597,7 @@ bool MainFrame::BindControls()
             /// System and peripherals
             ch = GetValidatedChild<wxChoice, wxGenericValidator>(d, "SaveType", wxGenericValidator(&cpuSaveType));
             BatConfigHandler.type = ch;
-            ch = GetValidatedChild<wxChoice, wxGenericValidator>(d, "FlashSize", wxGenericValidator(&winFlashSize));
+            ch = GetValidatedChild<wxChoice, wxGenericValidator>(d, "FlashSize", wxGenericValidator(&optFlashSize));
             BatConfigHandler.size = ch;
             d->Connect(XRCID("SaveType"), wxEVT_COMMAND_CHOICE_SELECTED,
                 wxCommandEventHandler(BatConfig_t::ChangeType),
diff --git a/src/wx/opts.cpp b/src/wx/opts.cpp
index f9155814..05627e04 100644
--- a/src/wx/opts.cpp
+++ b/src/wx/opts.cpp
@@ -569,7 +569,7 @@ void load_opts()
             cfg->Read(opt.opt, &opt.curint, *opt.intopt);
 
             if (opt.curint < opt.min || opt.curint > opt.max) {
-                wxLogWarning(_("Invalid value %d for option %s; valid values are %d - %d"), opt.curint, opt.opt.c_str(), opt.min, opt.max);
+                wxLogWarning(_("Invalid value %d for option %s; valid values are %d - %d"), opt.curint, opt.opt.c_str(), int(opt.min), int(opt.max));
             } else
                 *opt.intopt = opt.curint;
         } else if (opt.doubleopt) {
diff --git a/src/wx/panel.cpp b/src/wx/panel.cpp
index 92fd377e..acf79e4b 100644
--- a/src/wx/panel.cpp
+++ b/src/wx/panel.cpp
@@ -241,7 +241,7 @@ void GameArea::LoadGame(const wxString& name)
             int fsz = cfg->Read(wxT("flashSize"), (long)0);
 
             if (fsz != 0x10000 && fsz != 0x20000)
-                fsz = 0x10000 << winFlashSize;
+                fsz = 0x10000 << optFlashSize;
 
             flashSetSize(fsz);
             ovSaveType = cfg->Read(wxT("saveType"), cpuSaveType);
@@ -258,7 +258,7 @@ void GameArea::LoadGame(const wxString& name)
             cfg->SetPath(wxT("/"));
         } else {
             rtcEnable(rtcEnabled);
-            flashSetSize(0x10000 << winFlashSize);
+            flashSetSize(0x10000 << optFlashSize);
 
             if (cpuSaveType < 0 || cpuSaveType > 5)
                 cpuSaveType = 0;