diff --git a/pcsx2/gui/App.h b/pcsx2/gui/App.h
index 5c6eb39cf2..01498a4f3f 100644
--- a/pcsx2/gui/App.h
+++ b/pcsx2/gui/App.h
@@ -219,10 +219,12 @@ struct AppImageIds
 
 		ToolbarIds()
 		{
-			Settings	= Play	=
-			PluginVideo	=
-			PluginAudio	=
-			PluginPad	= -1;
+			Settings    = -1;
+			Play        = -1;
+			Resume      = -1;
+			PluginVideo = -1;
+			PluginAudio = -1;
+			PluginPad   = -1;
 		}
 	} Toolbars;
 };
diff --git a/pcsx2/gui/AppInit.cpp b/pcsx2/gui/AppInit.cpp
index 1a70e57980..fb2412342e 100644
--- a/pcsx2/gui/AppInit.cpp
+++ b/pcsx2/gui/AppInit.cpp
@@ -697,10 +697,13 @@ Pcsx2App::Pcsx2App()
 
 	m_PendingSaves			= 0;
 	m_ScheduledTermination	= false;
+	m_UseGUI				= true;
+	m_NoGuiExitPrompt		= true;
 
 	m_id_MainFrame		= wxID_ANY;
 	m_id_GsFrame		= wxID_ANY;
 	m_id_ProgramLogBox	= wxID_ANY;
+	m_id_Disassembler	= wxID_ANY;
 	m_ptr_ProgramLog	= NULL;
 
 	SetAppName( L"PCSX2" );
diff --git a/pcsx2/gui/AppMain.cpp b/pcsx2/gui/AppMain.cpp
index 614bb728a4..478fdf231c 100644
--- a/pcsx2/gui/AppMain.cpp
+++ b/pcsx2/gui/AppMain.cpp
@@ -1090,6 +1090,7 @@ public:
 	SysExecEvent_Execute()
 		: m_UseCDVDsrc(false)
 		, m_UseELFOverride(false)
+		, m_cdvdsrc_type(CDVDsrc_Iso)
 	{
 	}
 
diff --git a/pcsx2/gui/ConsoleLogger.h b/pcsx2/gui/ConsoleLogger.h
index 3f18649bcb..49e2d971e7 100644
--- a/pcsx2/gui/ConsoleLogger.h
+++ b/pcsx2/gui/ConsoleLogger.h
@@ -165,7 +165,7 @@ protected:
 		ConsoleColors	color;
 		int				startpoint;
 
-		ColorSection() {}
+		ColorSection() : color(Color_Default), startpoint(0) {}
 		ColorSection( ConsoleColors _color, int msgptr ) : color(_color), startpoint(msgptr) { }
 	};
 
diff --git a/pcsx2/gui/Debugger/CtrlRegisterList.cpp b/pcsx2/gui/Debugger/CtrlRegisterList.cpp
index 86b237caa8..a99f504933 100644
--- a/pcsx2/gui/Debugger/CtrlRegisterList.cpp
+++ b/pcsx2/gui/Debugger/CtrlRegisterList.cpp
@@ -45,8 +45,9 @@ CtrlRegisterList::CtrlRegisterList(wxWindow* parent, DebugInterface* _cpu)
 {
 	rowHeight = g_Conf->EmuOptions.Debugger.FontHeight+2;
 	charWidth = g_Conf->EmuOptions.Debugger.FontWidth;
-	category = 0;
-	maxBits = 128;
+	category  = 0;
+	maxBits   = 128;
+	lastPc    = 0xFFFFFFFF;
 
 	for (int i = 0; i < cpu->getRegisterCategoryCount(); i++)
 	{