diff --git a/HySoP/setup.py.in b/HySoP/setup.py.in
index 4ac918033ce5e1ab276fb6ad210f02dc958c583f..81e169d8301271c109d18ddf820c72c97f16a42c 100644
--- a/HySoP/setup.py.in
+++ b/HySoP/setup.py.in
@@ -67,6 +67,8 @@ if(enable_fortran is "ON"):
  
     withscales = '@WITH_SCALES@'
     if(withscales is "ON"):
+        if(withfftw is "OFF"):
+            fortran_src.append(fortran_dir+'parameters.f90')
         fortran_src.append(fortran_dir+'scales2py.f90')
 
     options = [('F2PY_REPORT_ON_ARRAY_COPY', '1')]