diff --git a/classes/external-toolchain.bbclass b/classes/external-toolchain.bbclass
index 251096e..a45886b 100644
--- a/classes/external-toolchain.bbclass
+++ b/classes/external-toolchain.bbclass
@@ -14,6 +14,10 @@
 # LIC_FILES_CHKSUM, so use the license from common-licenses
 inherit common-license
 
+# We don't extract anything which will create S, and we don't want to see the
+# warning about it
+S = "${WORKDIR}"
+
 # Prebuilt binaries, no need for any default dependencies
 INHIBIT_DEFAULT_DEPS = "1"