diff --git a/Core/FileLoaders/LocalFileLoader.cpp b/Core/FileLoaders/LocalFileLoader.cpp
index 232f3764a8..3f05fb4618 100644
--- a/Core/FileLoaders/LocalFileLoader.cpp
+++ b/Core/FileLoaders/LocalFileLoader.cpp
@@ -65,7 +65,7 @@ LocalFileLoader::LocalFileLoader(const std::string &filename)
 		return;
 	}
 	LARGE_INTEGER end_offset;
-	const LARGE_INTEGER zero = { 0 };
+	const LARGE_INTEGER zero{};
 	if (SetFilePointerEx(handle_, zero, &end_offset, FILE_END) == 0) {
 		// Couldn't seek in the file. Close it and give up? This should never happen.
 		CloseHandle(handle_);
diff --git a/Windows/CaptureDevice.cpp b/Windows/CaptureDevice.cpp
index 6d511f8b90..2154de868b 100644
--- a/Windows/CaptureDevice.cpp
+++ b/Windows/CaptureDevice.cpp
@@ -106,8 +106,8 @@ AudioFormatTransform g_AudioFormats[] = {
 const int g_cVideoFormats = ARRAYSIZE(g_VideoFormats);
 const int g_cAudioFormats = ARRAYSIZE(g_AudioFormats);
 
-MediaParam defaultVideoParam = { 640, 480,  0, MFVideoFormat_RGB24 };
-MediaParam defaultAudioParam = { 44100, 2, 16, MFAudioFormat_PCM };
+MediaParam defaultVideoParam = { { 640, 480,  0, MFVideoFormat_RGB24 } };
+MediaParam defaultAudioParam = { { 44100, 2, 16, MFAudioFormat_PCM } };
 
 HRESULT GetDefaultStride(IMFMediaType *pType, LONG *plStride);
 
@@ -435,7 +435,7 @@ WindowsCaptureDevice::WindowsCaptureDevice(CAPTUREDEVIDE_TYPE _type) :
 	errorMessage(""),
 	state(CAPTUREDEVIDE_STATE::UNINITIALIZED) {
 	param = { 0 };
-	deviceParam = { 0 };
+	deviceParam = { { 0 } };
 
 	switch (type) {
 	case CAPTUREDEVIDE_TYPE::VIDEO:
diff --git a/Windows/Debugger/CtrlRegisterList.cpp b/Windows/Debugger/CtrlRegisterList.cpp
index be57cfdba7..9cd9f36c0a 100644
--- a/Windows/Debugger/CtrlRegisterList.cpp
+++ b/Windows/Debugger/CtrlRegisterList.cpp
@@ -255,7 +255,7 @@ void CtrlRegisterList::onPaint(WPARAM wParam, LPARAM lParam)
 		{
 			char temp[256];
 			int len;
-			u32 value;
+			u32 value = -1;
 
 			switch (i)
 			{
diff --git a/Windows/GEDebugger/GEDebugger.cpp b/Windows/GEDebugger/GEDebugger.cpp
index 606fae6eb3..939edb6e3e 100644
--- a/Windows/GEDebugger/GEDebugger.cpp
+++ b/Windows/GEDebugger/GEDebugger.cpp
@@ -336,7 +336,7 @@ void CGEDebugger::UpdatePreviews() {
 		return;
 	}
 
-	GPUgstate state = {0};
+	GPUgstate state{};
 
 	if (gpuDebug != nullptr) {
 		state = gpuDebug->GetGState();
@@ -487,7 +487,7 @@ void CGEDebugger::PrimaryPreviewHover(int x, int y) {
 		desc[0] = 0;
 	} else if (x < 0 || y < 0) {
 		// This means they left the area.
-		GPUgstate state = {0};
+		GPUgstate state{};
 		if (gpuDebug != nullptr) {
 			state = gpuDebug->GetGState();
 		}
@@ -515,7 +515,7 @@ void CGEDebugger::SecondPreviewHover(int x, int y) {
 		desc[0] = 0;
 	} else if (x < 0 || y < 0) {
 		// This means they left the area.
-		GPUgstate state = {0};
+		GPUgstate state{};
 		if (gpuDebug != nullptr) {
 			state = gpuDebug->GetGState();
 		}
@@ -677,7 +677,7 @@ void CGEDebugger::DescribePixelRGBA(u32 pix, GPUDebugBufferFormat fmt, int x, in
 }
 
 void CGEDebugger::UpdateTextureLevel(int level) {
-	GPUgstate state = {0};
+	GPUgstate state{};
 	if (gpuDebug != nullptr) {
 		state = gpuDebug->GetGState();
 	}
diff --git a/Windows/GEDebugger/SimpleGLWindow.cpp b/Windows/GEDebugger/SimpleGLWindow.cpp
index a155b477e7..d9b60b7418 100644
--- a/Windows/GEDebugger/SimpleGLWindow.cpp
+++ b/Windows/GEDebugger/SimpleGLWindow.cpp
@@ -239,7 +239,7 @@ void SimpleGLWindow::Draw(const u8 *data, int w, int h, bool flipped, Format fmt
 
 	GLint components = GL_RGBA;
 	GLint memComponents = 0;
-	GLenum glfmt;
+	GLenum glfmt = GL_UNSIGNED_BYTE;
 	const u8 *finalData = data;
 	if (fmt == FORMAT_8888) {
 		glPixelStorei(GL_UNPACK_ALIGNMENT, 4);