diff --git a/PowerEditor/src/Notepad_plus.cpp b/PowerEditor/src/Notepad_plus.cpp
index 5bbfbf2e1..4339e1c09 100644
--- a/PowerEditor/src/Notepad_plus.cpp
+++ b/PowerEditor/src/Notepad_plus.cpp
@@ -4497,7 +4497,7 @@ void Notepad_plus::docOpenInNewInstance(FileTransferMode mode, int x, int y)
 
 	if (x)
 	{
-		TCHAR pX[10];
+		TCHAR pX[10]{};
 		_itow(x, pX, 10);
 		command += TEXT(" -x");
 		command += pX;
@@ -4505,7 +4505,7 @@ void Notepad_plus::docOpenInNewInstance(FileTransferMode mode, int x, int y)
 
 	if (y)
 	{
-		TCHAR pY[10];
+		TCHAR pY[10]{};
 		_itow(y, pY, 10);
 		command += TEXT(" -y");
 		command += pY;
diff --git a/PowerEditor/src/ScintillaComponent/Buffer.cpp b/PowerEditor/src/ScintillaComponent/Buffer.cpp
index 12d0d25c3..2cebb0d74 100644
--- a/PowerEditor/src/ScintillaComponent/Buffer.cpp
+++ b/PowerEditor/src/ScintillaComponent/Buffer.cpp
@@ -672,6 +672,9 @@ void FileManager::closeBuffer(BufferID id, ScintillaEditView * identifier)
 // backupFileName is sentinel of backup mode: if it's not NULL, then we use it (load it). Otherwise we use filename
 BufferID FileManager::loadFile(const TCHAR* filename, Document doc, int encoding, const TCHAR* backupFileName, FILETIME fileNameTimestamp)
 {
+	if (!filename)
+		return BUFFER_INVALID;
+
 	//Get file size
 	int64_t fileSize = -1;
 	const TCHAR* pPath = filename;
diff --git a/PowerEditor/src/ScintillaComponent/FindReplaceDlg.h b/PowerEditor/src/ScintillaComponent/FindReplaceDlg.h
index 538c14fd2..d16c57464 100644
--- a/PowerEditor/src/ScintillaComponent/FindReplaceDlg.h
+++ b/PowerEditor/src/ScintillaComponent/FindReplaceDlg.h
@@ -154,7 +154,7 @@ private:
 	enum CurrentPosInLineStatus { pos_infront, pos_between, pos_inside, pos_behind };
 
 	struct CurrentPosInLineInfo {
-		CurrentPosInLineStatus _status;
+		CurrentPosInLineStatus _status = pos_infront;
 		intptr_t auxiliaryInfo = -1; // according the status
 	};
 
diff --git a/PowerEditor/src/WinControls/AnsiCharPanel/ansiCharPanel.cpp b/PowerEditor/src/WinControls/AnsiCharPanel/ansiCharPanel.cpp
index 9f9de05ef..0de2d7a2f 100644
--- a/PowerEditor/src/WinControls/AnsiCharPanel/ansiCharPanel.cpp
+++ b/PowerEditor/src/WinControls/AnsiCharPanel/ansiCharPanel.cpp
@@ -177,7 +177,7 @@ void AnsiCharPanel::insertChar(unsigned char char2insert) const
 
 void AnsiCharPanel::insertString(LPWSTR string2insert) const
 {
-	char multiByteStr[10];
+	char multiByteStr[10]{};
 	int codepage = (*_ppEditView)->getCurrentBuffer()->getEncoding();
 	if (codepage == -1)
 	{
diff --git a/PowerEditor/src/WinControls/ClipboardHistory/clipboardHistoryPanel.cpp b/PowerEditor/src/WinControls/ClipboardHistory/clipboardHistoryPanel.cpp
index 4eaf6b4fc..4a3d9c62f 100644
--- a/PowerEditor/src/WinControls/ClipboardHistory/clipboardHistoryPanel.cpp
+++ b/PowerEditor/src/WinControls/ClipboardHistory/clipboardHistoryPanel.cpp
@@ -57,7 +57,7 @@ ClipboardData ClipboardHistoryPanel::getClipboadData()
 					}
 				}
 			}
-			else
+			else if (lpWchar != nullptr)
 			{
 				int nbBytes = (lstrlenW(lpWchar) + 1) * sizeof(wchar_t);
 				for (int i = 0 ; i < nbBytes ; ++i)