diff --git a/configure.ac b/configure.ac
index b516665cbf..1c31237a3c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1093,9 +1093,7 @@ fi
 # Add some default CPP flags needed for Boost, identified by the AX macro.
 CPPFLAGS="$CPPFLAGS $CPPFLAGS_BOOST_THREADCONF"
 
-# I can't get some of the #include <asio.hpp> right without this
-# TODO: find the real cause of asio/boost wanting pthreads
-# (this currently only occurs for src/lib/cc/session_unittests)
+# Can be required by gtest, boost and perhaps still asio
 PTHREAD_LDFLAGS=
 AC_CHECK_LIB(pthread, pthread_create,[ PTHREAD_LDFLAGS=-lpthread ], [])
 AC_SUBST(PTHREAD_LDFLAGS)