diff --git a/target/linux/rdc/Makefile b/target/linux/rdc/Makefile
index 9936b687c..0abff0039 100644
--- a/target/linux/rdc/Makefile
+++ b/target/linux/rdc/Makefile
@@ -24,3 +24,7 @@ define Target/Description
 endef
 
 $(eval $(call BuildTarget))
+
+$(eval $(call RequireCommand,lzma, \
+        Please install lzma-4.4x. \
+))