diff --git a/Mk/defaults.mk b/Mk/defaults.mk
index 1368f70ff..0f6f3b1c3 100644
--- a/Mk/defaults.mk
+++ b/Mk/defaults.mk
@@ -37,7 +37,7 @@ ARCH!=		uname -p
 
 PLUGIN_ABI?=	20.1
 PLUGIN_ARCH?=	${ARCH}
-PLUGIN_FLAVOUR=	${FLAVOUR}
+PLUGIN_FLAVOUR?=${FLAVOUR}
 
 REPLACEMENTS=	PLUGIN_ABI \
 		PLUGIN_ARCH \