diff --git a/target/sdk/Config.in b/target/sdk/Config.in
index 538b473d0..3ead29600 100644
--- a/target/sdk/Config.in
+++ b/target/sdk/Config.in
@@ -1,6 +1,6 @@
 config SDK
 	bool "Build the OpenWrt SDK"
-	default n
+	default y if ALL
 	help
 	  This is essentially a stripped-down version of the buildroot
 	  with a precompiled toolchain. It can be used to develop and