diff --git a/src/client/GameSave.cpp b/src/client/GameSave.cpp
index b13d34afe..8cda279bf 100644
--- a/src/client/GameSave.cpp
+++ b/src/client/GameSave.cpp
@@ -2419,7 +2419,7 @@ char * GameSave::serialiseOPS(unsigned int & dataLength)
 		soapLinkData = new unsigned char[3*soapCount];
 		if (!soapLinkData)
 			throw BuildException("Save error, out of memory (SOAP)");
-		soapLinkDataPtr = std::move(std::unique_ptr<unsigned char[]>(soapLinkData));
+		soapLinkDataPtr = std::unique_ptr<unsigned char[]>(soapLinkData);
 
 		//Iterate through particles in the same order that they were saved
 		for (y=0;y<fullH;y++)
diff --git a/src/gui/game/GameController.cpp b/src/gui/game/GameController.cpp
index 3183e0761..77c515206 100644
--- a/src/gui/game/GameController.cpp
+++ b/src/gui/game/GameController.cpp
@@ -297,7 +297,7 @@ void GameController::Install()
 #if defined(MACOSX)
 	new InformationMessage("No installation necessary", "You don't need to install The Powder Toy on OS X", false);
 #elif defined(WIN) || defined(LIN)
-	new ConfirmPrompt("Install The Powder Toy", "Do you wish to install The Powder Toy on this computer?\nThis allows you to open save files and saves directly from the website.", { [this] {
+	new ConfirmPrompt("Install The Powder Toy", "Do you wish to install The Powder Toy on this computer?\nThis allows you to open save files and saves directly from the website.", { [] {
 		if (Client::Ref().DoInstallation())
 		{
 			new InformationMessage("Success", "Installation completed", false);
diff --git a/src/gui/interface/DropDown.cpp b/src/gui/interface/DropDown.cpp
index 5a95eb173..9c40964ea 100644
--- a/src/gui/interface/DropDown.cpp
+++ b/src/gui/interface/DropDown.cpp
@@ -12,7 +12,6 @@ class DropDownWindow : public ui::Window
 	DropDown * dropDown;
 	Appearance appearance;
 	std::vector<Button> buttons;
-	bool isMouseInside;
 
 public:
 	DropDownWindow(DropDown * dropDown):
diff --git a/src/gui/preview/PreviewView.cpp b/src/gui/preview/PreviewView.cpp
index 8bb557d43..2acfd87ed 100644
--- a/src/gui/preview/PreviewView.cpp
+++ b/src/gui/preview/PreviewView.cpp
@@ -602,7 +602,7 @@ void PreviewView::NotifyCommentsChanged(PreviewModel * sender)
 			if (showAvatars)
 			{
 				tempAvatar = new ui::AvatarButton(ui::Point(2, currentY+7), ui::Point(26, 26), comments->at(i)->authorName);
-				tempAvatar->SetActionCallback({ [this, tempAvatar] {
+				tempAvatar->SetActionCallback({ [tempAvatar] {
 					if (tempAvatar->GetUsername().size() > 0)
 					{
 						new ProfileActivity(tempAvatar->GetUsername());
diff --git a/src/gui/render/RenderView.cpp b/src/gui/render/RenderView.cpp
index c3191bb68..a7eb03954 100644
--- a/src/gui/render/RenderView.cpp
+++ b/src/gui/render/RenderView.cpp
@@ -48,7 +48,7 @@ RenderView::RenderView():
 		renderModes.push_back(renderModeCheckbox);
 		renderModeCheckbox->mode = mode;
 		renderModeCheckbox->SetIcon(icon);
-		renderModeCheckbox->SetActionCallback({ [this, mode, renderModeCheckbox] {
+		renderModeCheckbox->SetActionCallback({ [this, renderModeCheckbox] {
 			if (renderModeCheckbox->GetChecked())
 				c->SetRenderMode(renderModeCheckbox->mode);
 			else
@@ -69,7 +69,7 @@ RenderView::RenderView():
 		displayModes.push_back(displayModeCheckbox);
 		displayModeCheckbox->mode = mode;
 		displayModeCheckbox->SetIcon(icon);
-		displayModeCheckbox->SetActionCallback({ [this, mode, displayModeCheckbox] {
+		displayModeCheckbox->SetActionCallback({ [this, displayModeCheckbox] {
 			if (displayModeCheckbox->GetChecked())
 				c->SetDisplayMode(displayModeCheckbox->mode);
 			else
@@ -99,7 +99,7 @@ RenderView::RenderView():
 		colourModes.push_back(colourModeCheckbox);
 		colourModeCheckbox->mode = mode;
 		colourModeCheckbox->SetIcon(icon);
-		colourModeCheckbox->SetActionCallback({ [this, mode, colourModeCheckbox] {
+		colourModeCheckbox->SetActionCallback({ [this, colourModeCheckbox] {
 			if(colourModeCheckbox->GetChecked())
 				c->SetColourMode(colourModeCheckbox->mode);
 			else
diff --git a/src/simulation/elements/PPIP.cpp b/src/simulation/elements/PPIP.cpp
index bd49414fb..69579c465 100644
--- a/src/simulation/elements/PPIP.cpp
+++ b/src/simulation/elements/PPIP.cpp
@@ -50,16 +50,11 @@ void Element::Element_PPIP()
 	Graphics = &Element_PIPE_graphics;
 }
 
-constexpr int PFLAG_NORMALSPEED            = 0x00010000;
 // parts[].tmp flags
 // trigger flags to be processed this frame (trigger flags for next frame are shifted 3 bits to the left):
 constexpr int PPIP_TMPFLAG_TRIGGER_ON      = 0x10000000;
 constexpr int PPIP_TMPFLAG_TRIGGER_OFF     = 0x08000000;
 constexpr int PPIP_TMPFLAG_TRIGGER_REVERSE = 0x04000000;
-constexpr int PPIP_TMPFLAG_TRIGGERS        = 0x1C000000;
-// current status of the pipe
-constexpr int PPIP_TMPFLAG_PAUSED          = 0x02000000;
-constexpr int PPIP_TMPFLAG_REVERSED        = 0x01000000;
 // 0x000000FF element
 // 0x00000100 is single pixel pipe
 // 0x00000200 will transfer like a single pixel pipe when in forward mode