diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index e593e56e530b..dd04f0ce5277 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -451,7 +451,6 @@ static void establish_demotion_targets(void)
 }
 
 #else
-static inline void disable_all_demotion_targets(void) {}
 static inline void establish_demotion_targets(void) {}
 #endif /* CONFIG_MIGRATION */