diff --git a/qt5/src/poppler-private.h b/qt5/src/poppler-private.h
index 0dd40d7..f4a9a64 100644
--- a/qt5/src/poppler-private.h
+++ b/qt5/src/poppler-private.h
@@ -86,11 +86,7 @@ namespace Poppler {
 		m_filePath = filePath;	
 
 #ifdef _WIN32
-		wchar_t *fileName = new WCHAR[filePath.length()];
-		std::wstring wstr = (const wchar_t *)filePath.utf16();
-		int length = wstr._Copy_s(fileName, filePath.length(), filePath.length());
-		doc = new PDFDoc(fileName, length, ownerPassword, userPassword);
-		delete[] fileName;
+		doc = new PDFDoc((wchar_t *)filePath.utf16(), filePath.length(), ownerPassword, userPassword);
 #else
 		GooString *fileName = new GooString(QFile::encodeName(filePath));
 		doc = new PDFDoc(fileName, ownerPassword, userPassword);