diff --git a/src/mpid/ch3/channels/nemesis/netmod/mx/subconfigure.m4 b/src/mpid/ch3/channels/nemesis/netmod/mx/subconfigure.m4
index f2169e5b..76275608 100644
--- a/src/mpid/ch3/channels/nemesis/netmod/mx/subconfigure.m4
+++ b/src/mpid/ch3/channels/nemesis/netmod/mx/subconfigure.m4
@@ -34,7 +34,7 @@ AM_COND_IF([BUILD_NEMESIS_NETMOD_MX],[
         AC_MSG_ERROR(['MX API version Problem.  Are you running a recent version of MX (at least 1.2.1)?'])
      fi;
      AC_DEFINE([ENABLE_COMM_OVERRIDES], 1, [define to add per-vc function pointers to override send and recv functions])
-     PAC_APPEND_FLAG([-lmx],[EXTERNAL_LIBS])
+     PAC_APPEND_FLAG([-lmyriexpress],[EXTERNAL_LIBS])
 
 ])dnl end AM_COND_IF(BUILD_NEMESIS_NETMOD_MX,...)
 ])dnl end _BODY