diff --git a/include/libtorrent/escape_string.hpp b/include/libtorrent/escape_string.hpp
index 5c493faa8..4d2863884 100644
--- a/include/libtorrent/escape_string.hpp
+++ b/include/libtorrent/escape_string.hpp
@@ -68,7 +68,6 @@ namespace libtorrent
 
 	// encodes a string using the base64 scheme
 	TORRENT_EXTRA_EXPORT std::string base64encode(std::string const& s);
-	TORRENT_EXTRA_EXPORT std::string base64decode(std::string const& s);
 	// encodes a string using the base32 scheme
 	TORRENT_EXTRA_EXPORT std::string base32encode(std::string const& s);
 	TORRENT_EXTRA_EXPORT std::string base32decode(std::string const& s);