diff --git a/package/Makefile.in b/package/Makefile.in
index 2605639c9e..7daa3b4040 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -371,7 +371,7 @@ DISABLE_IPV6= --disable-ipv6
 endif
 
 ifneq ($(BR2_GCC_CROSS_CXX),y)
-TARGET_CONFIGURE_OPTS+=CXX=""
+TARGET_CONFIGURE_OPTS+=CXX=false
 endif
 
 ifeq ($(BR2_ENABLE_DEBUG),y)