diff --git a/Source/Fortran/CMakeLists.txt b/Source/Fortran/CMakeLists.txt
index 73248817..2e5d6e48 100644
--- a/Source/Fortran/CMakeLists.txt
+++ b/Source/Fortran/CMakeLists.txt
@@ -44,6 +44,7 @@ set(Fsrc
     TrigonometrySolversModule.F90
     TripletListModule.F90
     TripletModule.F90
+    test_ntpoly_link.f90
 )
 
 ################################################################################
diff --git a/Source/Fortran/test_ntpoly_link.f90 b/Source/Fortran/test_ntpoly_link.f90
new file mode 100644
index 00000000..5e2a93eb
--- /dev/null
+++ b/Source/Fortran/test_ntpoly_link.f90
@@ -0,0 +1,3 @@
+!> this subroutine is just here for testing linking with autotools.
+SUBROUTINE test_ntpoly_link()
+END SUBROUTINE test_ntpoly_link