diff --git a/local/recipes/dev/bison/recipe.toml b/local/recipes/dev/bison/recipe.toml
index 80cde0bdd3..40cc06e75d 100644
--- a/local/recipes/dev/bison/recipe.toml
+++ b/local/recipes/dev/bison/recipe.toml
@@ -21,6 +21,10 @@ export gl_cv_header_spawn_h_POSIX_SPAWN_SETSIGMASK=yes
 export gl_cv_header_spawn_h_POSIX_SPAWN_SETSCHEDULER=yes
 export gl_cv_header_spawn_h_POSIX_SPAWN_SETSCHEDPARAM=yes
 export gl_cv_header_spawn_h_POSIX_SPAWN_USEVFORK=yes
+export ac_cv_header_sched_h=yes
+export gl_cv_header_sched_h=yes
+export ac_cv_type_struct_sched_param=yes
+export ac_cv_type_sched_param=yes
 COOKBOOK_CONFIGURE_FLAGS+=(
     --disable-nls
 )