diff --git a/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp b/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
index 966f881b0..19df601ae 100644
--- a/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
+++ b/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
@@ -303,6 +303,7 @@ void ScintillaEditView::init(HINSTANCE hInst, HWND hPere)
 		auto defaultCharListLen = execute(SCI_GETWORDCHARS);
 		char *defaultCharList = new char[defaultCharListLen + 1];
 		execute(SCI_GETWORDCHARS, 0, reinterpret_cast<LPARAM>(defaultCharList));
+		defaultCharList[defaultCharListLen] = '\0';
 		_defaultCharList = defaultCharList;
 		delete[] defaultCharList;
 	}