diff --git a/var/spack/repos/builtin/packages/libcerf/package.py b/var/spack/repos/builtin/packages/libcerf/package.py
index 8a203f5ddd..1451bbe52b 100644
--- a/var/spack/repos/builtin/packages/libcerf/package.py
+++ b/var/spack/repos/builtin/packages/libcerf/package.py
@@ -25,5 +25,8 @@ def configure_args(self):
         # http://clang.debian.net/status.php?version=3.8.1&key=UNUSED_FUNCTION
         if spec.satisfies('%clang'):
             options.append('CFLAGS=-Wno-unused-function')
+        # fujitsu compiler has a error about unused functions too.
+        if spec.satisfies('%fj'):
+            options.append('CFLAGS=-Wno-unused-function')
 
         return options