diff --git a/libtorrent-rasterbar.pc.in b/libtorrent-rasterbar.pc.in
index df0f3e601..4f8b14aa8 100644
--- a/libtorrent-rasterbar.pc.in
+++ b/libtorrent-rasterbar.pc.in
@@ -12,5 +12,5 @@ Name: libtorrent-rasterbar
 Description: Bittorrent library.
 Version: @VERSION@
 Libs: -L${libdir} -ltorrent-rasterbar
-Libs.private: @LIBS@ @BOOST_FILESYSTEM_LIB@ @BOOST_THREAD_LIB@ @PTHREAD_LIBS@ @SSL_LIBS@
+Libs.private: @LIBS@ @BOOST_FILESYSTEM_LIB@ @BOOST_THREAD_LIB@ @PTHREAD_LIBS@ @SSL_LIBS@ @BOOST_SYSTEM_LIB@
 Cflags: -I${includedir} -I${includedir}/libtorrent @COMPILETIME_OPTIONS@ @CPPFLAGS@