diff --git a/lib/Makefile b/lib/Makefile
index 2e78277..347ad8d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -91,6 +91,8 @@
 
 obj-$(CONFIG_NLATTR) += nlattr.o
 
+obj-$(CONFIG_LRU_CACHE) += lru_cache.o
+
 obj-$(CONFIG_DMA_API_DEBUG) += dma-debug.o
 
 obj-$(CONFIG_GENERIC_CSUM) += checksum.o