diff --git a/src/contentHandler.cpp b/src/contentHandler.cpp
index bf7923a4..295df165 100644
--- a/src/contentHandler.cpp
+++ b/src/contentHandler.cpp
@@ -106,7 +106,7 @@ void contentHandler::setData(const string& buffer, const string::size_type start
 }
 
 
-void contentHandler::setData(utility::inputStream* const is, const utility::stream::size_type length,
+void contentHandler::setData(utility::inputStream* is, const utility::stream::size_type length,
 	const bool own, const vmime::encoding& enc)
 {
 	m_type = TYPE_STREAM;
diff --git a/vmime/contentHandler.hpp b/vmime/contentHandler.hpp
index fa3dfd56..f3fa8a6e 100644
--- a/vmime/contentHandler.hpp
+++ b/vmime/contentHandler.hpp
@@ -65,7 +65,7 @@ public:
 	void setData(const utility::stringProxy& str, const vmime::encoding& enc = NO_ENCODING);
 	void setData(const string& buffer, const vmime::encoding& enc = NO_ENCODING);
 	void setData(const string& buffer, const string::size_type start, const string::size_type end, const vmime::encoding& enc = NO_ENCODING);
-	void setData(utility::inputStream* const is, const utility::stream::size_type length, const bool own, const vmime::encoding& enc = NO_ENCODING);
+	void setData(utility::inputStream* is, const utility::stream::size_type length, const bool own, const vmime::encoding& enc = NO_ENCODING);
 
 	// For compatibility
 	contentHandler& operator=(const string& buffer);