diff --git a/config/cesm/machines/config_compilers.xml b/config/cesm/machines/config_compilers.xml
index 2abaae9853af..e33594c56ef2 100644
--- a/config/cesm/machines/config_compilers.xml
+++ b/config/cesm/machines/config_compilers.xml
@@ -701,6 +701,9 @@ using a fortran linker.
   <LDFLAGS>
     <append> -lpthread</append>
   </LDFLAGS>
+  <SLIBS>
+    <append> -L/usr/local/nag/lib/NAG_Fortran </append>
+  </SLIBS>
 </compiler>
 
 <compiler MACH="hobart" COMPILER="pgi">