diff --git a/midipix.env b/midipix.env
index efc1a6d..c078915 100644
--- a/midipix.env
+++ b/midipix.env
@@ -293,6 +293,7 @@ gl_cv_func_working_getdelim=yes
 gl_cv_func_working_mkstemp=yes
 gl_cv_func_working_mktime=yes
 gl_cv_func_working_strerror=yes
-gl_cv_struct_dirent_d_ino=yes"};
+gl_cv_struct_dirent_d_ino=yes
+gl_cv_func_getopt_gnu=yes"};
 
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