diff --git a/scintilla/src/Document.cxx b/scintilla/src/Document.cxx
index aafe8fcd6d..485791c485 100644
--- a/scintilla/src/Document.cxx
+++ b/scintilla/src/Document.cxx
@@ -2979,7 +2979,7 @@ class BuiltinRegex final : public RegexSearchBase {
 	RESearch search;
 #if defined(BOOST_REGEX_STANDALONE) || !defined(NO_CXX11_REGEX)
 	// cache for previous pattern to avoid recompile
-	FindOption previousFlags;
+	FindOption previousFlags = FindOption::None;
 	std::string cachedPattern;
 #endif
 	std::string substituted;
diff --git a/src/Notepad2.c b/src/Notepad2.c
index 2cf3d730ee..26a7daca4a 100644
--- a/src/Notepad2.c
+++ b/src/Notepad2.c
@@ -1038,7 +1038,7 @@ void MsgDropFiles(HWND hwnd, UINT umsg, WPARAM wParam) {
 	HDROP hDrop = (HDROP)wParam;
 	// fix drag & drop file from 32-bit app to 64-bit Notepad2 before Win 10
 #if defined(_WIN64) && (_WIN32_WINNT < _WIN32_WINNT_WIN10)
-	if (umsg == WM_DROPFILES) {
+	if (umsg == WM_DROPFILES && !bReadOnlyMode) {
 		POINT pt;
 		if (DragQueryPoint(hDrop, &pt)) { // client area
 			RECT rc;