diff --git a/src/vmime/body.hpp b/src/vmime/body.hpp
index fad59bcd..508c47a8 100644
--- a/src/vmime/body.hpp
+++ b/src/vmime/body.hpp
@@ -311,7 +311,7 @@ private:
 
 	shared_ptr <const contentHandler> m_contents;
 
-	bodyPart* m_part;
+	bodyPart* m_part = nullptr;
 
 	std::vector <shared_ptr <bodyPart> > m_parts;