diff --git a/var/spack/repos/builtin/packages/nn-c/package.py b/var/spack/repos/builtin/packages/nn-c/package.py
index 20fa95054d4..01f8e652b35 100644
--- a/var/spack/repos/builtin/packages/nn-c/package.py
+++ b/var/spack/repos/builtin/packages/nn-c/package.py
@@ -26,8 +26,8 @@ def configure_args(self):
         args = []
         if '+pic' in self.spec:
             args.extend([
-                'CFLAGS={0}'.format(self.compiler.pic_flag),
-                'CXXFLAGS={0}'.format(self.compiler.pic_flag),
-                'FFLAGS={0}'.format(self.compiler.pic_flag)
+                'CFLAGS={0}'.format(self.compiler.cc_pic_flag),
+                'CXXFLAGS={0}'.format(self.compiler.cxx_pic_flag),
+                'FFLAGS={0}'.format(self.compiler.fc_pic_flag)
             ])
         return args